{"group":{"id":1,"name":"Community","lockable":false,"created_at":"2012-01-18T18:02:15.000Z","updated_at":"2026-04-16T00:12:35.000Z","description":"Problems submitted by members of the MATLAB Central community.","is_default":true,"created_by":161519,"badge_id":null,"featured":false,"trending":false,"solution_count_in_trending_period":0,"trending_last_calculated":"2026-04-16T00:00:00.000Z","image_id":null,"published":true,"community_created":false,"status_id":2,"is_default_group_for_player":false,"deleted_by":null,"deleted_at":null,"restored_by":null,"restored_at":null,"description_opc":null,"description_html":null,"published_at":null},"problems":[{"id":44871,"title":"Calculate Resistance","description":"Calculate Resistance R of a linear conductor having resistivity p, length l and area A","description_html":"\u003cp\u003eCalculate Resistance R of a linear conductor having resistivity p, length l and area A\u003c/p\u003e","function_template":"function R = Resistance(p,l,A);\r\nR=*p+l/A^2;\r\n","test_suite":"%%\r\np=1;l=1;A=2;\r\ncorrect = 0.5;\r\nassert(isequal(Resistance(p,l,A),correct))\r\n%%\r\np=0.5;l=10;A=2;\r\ncorrect = 2.5;\r\nassert(isequal(Resistance (p,l,A),correct))","published":true,"deleted":false,"likes_count":1,"comments_count":0,"created_by":293792,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":105,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2019-03-07T08:28:08.000Z","updated_at":"2026-03-03T22:21:36.000Z","published_at":"2019-03-07T08:28:08.000Z","restored_at":null,"restored_by":null,"spam":false,"simulink":false,"admin_reviewed":false,"description_opc":"{\"relationships\":[{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/document\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"relationshipId\":\"rId2\",\"target\":\"/matlab/output.xml\"}],\"parts\":[{\"partUri\":\"/matlab/document.xml\",\"relationship\":[],\"contentType\":\"application/vnd.mathworks.matlab.code.document+xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\"?\u003e\u003cw:document xmlns:w=\\\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\\\"\u003e\u003cw:body\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eCalculate Resistance R of a linear conductor having resistivity p, length l and area A\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003c/w:body\u003e\u003c/w:document\u003e\"},{\"partUri\":\"/matlab/output.xml\",\"contentType\":\"text/xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\" standalone=\\\"no\\\" ?\u003e\u003cembeddedOutputs\u003e\u003cmetaData\u003e\u003cevaluationState\u003emanual\u003c/evaluationState\u003e\u003clayoutState\u003ecode\u003c/layoutState\u003e\u003coutputStatus\u003eready\u003c/outputStatus\u003e\u003c/metaData\u003e\u003coutputArray type=\\\"array\\\"/\u003e\u003cregionArray 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105.375px; vertical-align: baseline; \"\u003e\u003cdiv style=\"block-size: 21px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 10.5px; text-align: left; transform-origin: 384px 10.5px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 191.358px 7.75px; transform-origin: 191.358px 7.75px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eWhat is the total resistance of a number of resistors in series?\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003cdiv style=\"block-size: 21px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 10.5px; text-align: left; transform-origin: 384px 10.5px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 148.567px 7.75px; transform-origin: 148.567px 7.75px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eA vector R contains the resistances (in Ohm) of \u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 3.89167px 7.75px; transform-origin: 3.89167px 7.75px; unicode-bidi: normal; \"\u003e\u003cspan style=\"font-style: italic; \"\u003en\u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 126.417px 7.75px; transform-origin: 126.417px 7.75px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003e resistors, which are connected in series:\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003cdiv style=\"block-size: 90.75px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; 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data-image-state=\"image-loaded\" width=\"361\" height=\"85\"\u003e\u003c/div\u003e\u003cdiv style=\"block-size: 21px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 10.5px; text-align: left; transform-origin: 384px 10.5px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 355.233px 7.75px; transform-origin: 355.233px 7.75px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eYour function should take the vector R as its input and return the total resistance (in Ohm) of the series of resistors.\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003cdiv style=\"block-size: 21px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 10.5px; text-align: left; transform-origin: 384px 10.5px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 29.5583px 7.75px; transform-origin: 29.5583px 7.75px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eHint: see \u003c/span\u003e\u003c/span\u003e\u003ca target='_blank' href = \"https://en.wikipedia.org/wiki/Resistor#Series_and_parallel_resistors\"\u003e\u003cspan style=\"\"\u003e\u003cspan style=\"\"\u003ehttps://en.wikipedia.org/wiki/Resistor#Series_and_parallel_resistors\u003c/span\u003e\u003c/span\u003e\u003c/a\u003e\u003c/div\u003e\u003c/div\u003e\u003c/div\u003e","function_template":"function totalRes = resistance(R)\r\n  totalRes = R;\r\nend","test_suite":"%%\r\nR = 10;\r\ny_correct = 10;\r\nassert(abs(resistance(R)-y_correct)\u003c0.000001)\r\n\r\n%%\r\nR = [1000 120 5250 250];\r\ny_correct = 6620;\r\nassert(abs(resistance(R)-y_correct)\u003c0.000001)\r\n\r\n%%\r\nR = [15000 2500 120000 10 350 1250];\r\ny_correct = 139110;\r\nassert(abs(resistance(R)-y_correct)\u003c0.000001)\r\n\r\n%%\r\n%Anti-cheating #1\r\nR = randi(2000,[1,50]);\r\nRs = num2str(R');\r\ns=0;for ii=1:length(Rs),s=s+str2num(Rs(ii,:));end\r\ny_correct = s;\r\nassert(abs(resistance(R)-y_correct)\u003c0.000001)\r\n\r\n%%\r\n%Anti-cheating #2\r\ns=importdata('resistance.m');\r\ny_correct=false;\r\nassert(isequal(sum(contains(s,'regexp')),y_correct),'Regexp not allowed');\r\nassert(isequal(sum(contains(s,'assert')),y_correct),'Assert not allowed');","published":true,"deleted":false,"likes_count":1,"comments_count":0,"created_by":437780,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":55,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2022-01-07T09:37:30.000Z","updated_at":"2026-02-10T16:37:10.000Z","published_at":"2022-01-07T10:03:27.000Z","restored_at":null,"restored_by":null,"spam":false,"simulink":false,"admin_reviewed":false,"description_opc":"{\"parts\":[{\"partUri\":\"/matlab/document.xml\",\"contentType\":\"application/vnd.mathworks.matlab.code.document+xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\"?\u003e\u003cw:document xmlns:w=\\\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\\\"\u003e\u003cw:body\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eWhat is the total resistance of a number of resistors in series?\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eA vector R contains the resistances (in Ohm) of \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:rPr\u003e\u003cw:i/\u003e\u003c/w:rPr\u003e\u003cw:t\u003en\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e resistors, which are connected in series:\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:customXml w:element=\\\"image\\\"\u003e\u003cw:customXmlPr\u003e\u003cw:attr w:name=\\\"height\\\" w:val=\\\"85\\\"/\u003e\u003cw:attr w:name=\\\"width\\\" w:val=\\\"361\\\"/\u003e\u003cw:attr w:name=\\\"verticalAlign\\\" w:val=\\\"baseline\\\"/\u003e\u003cw:attr w:name=\\\"altText\\\" w:val=\\\"\\\"/\u003e\u003cw:attr w:name=\\\"relationshipId\\\" w:val=\\\"rId1\\\"/\u003e\u003c/w:customXmlPr\u003e\u003c/w:customXml\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eYour function should take the vector R as its input and return the total resistance (in Ohm) of the series of resistors.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eHint: see \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:hyperlink w:docLocation=\\\"https://en.wikipedia.org/wiki/Resistor#Series_and_parallel_resistors\\\"\u003e\u003cw:r\u003e\u003cw:t\u003ehttps://en.wikipedia.org/wiki/Resistor#Series_and_parallel_resistors\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:hyperlink\u003e\u003c/w:p\u003e\u003c/w:body\u003e\u003c/w:document\u003e\",\"relationship\":[{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/image\",\"target\":\"/media/image1.png\",\"relationshipId\":\"rId1\"}]},{\"partUri\":\"/media/image1.png\",\"contentType\":\"image/png\",\"content\":\"data:image/png;base64,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resistance of resistors in parallel","description":"What is the total resistance of a number of resistors in parallel?\r\nA vector R contains the resistances (in Ohm) of n resistors, which are connected in parallel:\r\n\r\nYour function should take the vector R as its input and return the total resistance (in Ohm) of the parallel resistors.\r\nHint: see https://en.wikipedia.org/wiki/Resistor#Series_and_parallel_resistors","description_html":"\u003cdiv style = \"text-align: start; line-height: 20.4333px; min-height: 0px; white-space: normal; color: rgb(0, 0, 0); font-family: Menlo, Monaco, Consolas, monospace; font-style: normal; font-size: 14px; font-weight: 400; text-decoration: rgb(0, 0, 0); white-space: normal; \"\u003e\u003cdiv style=\"block-size: 267.75px; display: block; min-width: 0px; padding-block-start: 0px; padding-top: 0px; perspective-origin: 407px 133.875px; transform-origin: 407px 133.875px; vertical-align: baseline; \"\u003e\u003cdiv style=\"block-size: 21px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 10.5px; text-align: left; transform-origin: 384px 10.5px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 195.258px 7.75px; transform-origin: 195.258px 7.75px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eWhat is the total resistance of a number of resistors in parallel?\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003cdiv style=\"block-size: 21px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 10.5px; text-align: left; transform-origin: 384px 10.5px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 148.567px 7.75px; transform-origin: 148.567px 7.75px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eA vector R contains the resistances (in Ohm) of \u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 3.89167px 7.75px; transform-origin: 3.89167px 7.75px; unicode-bidi: normal; \"\u003e\u003cspan style=\"font-style: italic; \"\u003en\u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 130.317px 7.75px; transform-origin: 130.317px 7.75px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003e resistors, which are connected in parallel:\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003cdiv style=\"block-size: 147.75px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 73.875px; text-align: left; transform-origin: 384px 73.875px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cimg class=\"imageNode\" style=\"vertical-align: baseline;width: 284px;height: 142px\" 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\" data-image-state=\"image-loaded\" width=\"284\" height=\"142\"\u003e\u003c/div\u003e\u003cdiv style=\"block-size: 21px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 10.5px; text-align: left; transform-origin: 384px 10.5px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 351.358px 7.75px; transform-origin: 351.358px 7.75px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eYour function should take the vector R as its input and return the total resistance (in Ohm) of the parallel resistors.\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003cdiv style=\"block-size: 21px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 10.5px; text-align: left; transform-origin: 384px 10.5px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 29.5583px 7.75px; transform-origin: 29.5583px 7.75px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eHint: see \u003c/span\u003e\u003c/span\u003e\u003ca target='_blank' href = \"https://en.wikipedia.org/wiki/Resistor#Series_and_parallel_resistors\"\u003e\u003cspan style=\"\"\u003e\u003cspan style=\"\"\u003ehttps://en.wikipedia.org/wiki/Resistor#Series_and_parallel_resistors\u003c/span\u003e\u003c/span\u003e\u003c/a\u003e\u003c/div\u003e\u003c/div\u003e\u003c/div\u003e","function_template":"function totalRes = resistance(R)\r\n  totalRes = R;\r\nend","test_suite":"%%\r\nR = 10;\r\ny_correct = 10;\r\nassert(abs(resistance(R)-y_correct)\u003c0.0001)\r\n\r\n%%\r\nR = [1000 120 5250 250];\r\ny_correct = 73.9437;\r\nassert(abs(resistance(R)-y_correct)\u003c0.0001)\r\n\r\n%%\r\nR = [15000 2500 120000 10 350 1250];\r\ny_correct = 9.6032;\r\nassert(abs(resistance(R)-y_correct)\u003c0.0001)\r\n\r\n%%\r\n%Anti-cheating #1\r\nR = randi(2000,[1,50]);\r\nRs = num2str(R');\r\ns=0;for ii=1:length(Rs),s=s+str2num(Rs(ii,:)).^-1;end\r\ny_correct = s^-1;\r\nassert(abs(resistance(R)-y_correct)\u003c0.0001)\r\n\r\n%%\r\n%Anti-cheating #2\r\ns=importdata('resistance.m');\r\ny_correct=false;\r\nassert(isequal(sum(contains(s,'regexp')),y_correct),'Regexp not allowed');\r\nassert(isequal(sum(contains(s,'assert')),y_correct),'Assert not allowed');","published":true,"deleted":false,"likes_count":1,"comments_count":0,"created_by":437780,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":59,"test_suite_updated_at":"2022-01-07T14:37:05.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2022-01-07T13:05:22.000Z","updated_at":"2026-02-10T14:01:40.000Z","published_at":"2022-01-07T13:13:00.000Z","restored_at":null,"restored_by":null,"spam":false,"simulink":false,"admin_reviewed":false,"description_opc":"{\"parts\":[{\"partUri\":\"/matlab/document.xml\",\"contentType\":\"application/vnd.mathworks.matlab.code.document+xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\"?\u003e\u003cw:document xmlns:w=\\\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\\\"\u003e\u003cw:body\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eWhat is the total resistance of a number of resistors in parallel?\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eA vector R contains the resistances (in Ohm) of \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:rPr\u003e\u003cw:i/\u003e\u003c/w:rPr\u003e\u003cw:t\u003en\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e resistors, which are connected in parallel:\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:customXml w:element=\\\"image\\\"\u003e\u003cw:customXmlPr\u003e\u003cw:attr w:name=\\\"height\\\" w:val=\\\"142\\\"/\u003e\u003cw:attr w:name=\\\"width\\\" w:val=\\\"284\\\"/\u003e\u003cw:attr w:name=\\\"verticalAlign\\\" w:val=\\\"baseline\\\"/\u003e\u003cw:attr w:name=\\\"altText\\\" w:val=\\\"\\\"/\u003e\u003cw:attr w:name=\\\"relationshipId\\\" w:val=\\\"rId1\\\"/\u003e\u003c/w:customXmlPr\u003e\u003c/w:customXml\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eYour function should take the vector R as its input and return the total resistance (in Ohm) of the parallel resistors.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eHint: see \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:hyperlink w:docLocation=\\\"https://en.wikipedia.org/wiki/Resistor#Series_and_parallel_resistors\\\"\u003e\u003cw:r\u003e\u003cw:t\u003ehttps://en.wikipedia.org/wiki/Resistor#Series_and_parallel_resistors\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:hyperlink\u003e\u003c/w:p\u003e\u003c/w:body\u003e\u003c/w:document\u003e\",\"relationship\":[{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/image\",\"target\":\"/media/image1.png\",\"relationshipId\":\"rId1\"}]},{\"partUri\":\"/media/image1.png\",\"contentType\":\"image/png\",\"content\":\"data:image/png;base64,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4;\r\nassert(isequal(Resistance(V,I),y_correct))","published":true,"deleted":false,"likes_count":0,"comments_count":0,"created_by":293792,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":97,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2019-03-07T08:43:11.000Z","updated_at":"2026-02-09T15:00:57.000Z","published_at":"2019-03-07T08:43:11.000Z","restored_at":null,"restored_by":null,"spam":false,"simulink":false,"admin_reviewed":false,"description_opc":"{\"relationships\":[{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/document\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"relationshipId\":\"rId2\",\"target\":\"/matlab/output.xml\"}],\"parts\":[{\"partUri\":\"/matlab/document.xml\",\"relationship\":[],\"contentType\":\"application/vnd.mathworks.matlab.code.document+xml\",\"content\":\"\u003c?xml 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Each row of the matrix contains the resistances of the resistors in that 'string', and all rows of resistors are connected in parallel. An input matrix may thus be represented as:\r\nR = [120 200 1500 50;\r\n     500 50 NaN NaN;\r\n     3000 NaN NaN NaN;\r\n     460 180 900 NaN]\r\nSince there must be as many columns in the matrix as the maximum number of resistors in any 'string', NaNs are used to 'pad out' any row in which that string has fewer resistors.\r\nThe simple case in the figure above would be represented as:\r\nR = [R1 R2; R3 NaN]\r\nYour function should take the matrix R as its input and return the total resistance (in Ohm) of the network of resistors.\r\nHint: see https://en.wikipedia.org/wiki/Resistor#Series_and_parallel_resistors","description_html":"\u003cdiv style = \"text-align: start; line-height: 20.4333px; min-height: 0px; white-space: normal; color: rgb(0, 0, 0); font-family: Menlo, Monaco, Consolas, monospace; font-style: normal; font-size: 14px; font-weight: 400; text-decoration: rgb(0, 0, 0); white-space: normal; \"\u003e\u003cdiv style=\"block-size: 547.917px; display: block; min-width: 0px; padding-block-start: 0px; padding-top: 0px; perspective-origin: 407px 273.958px; transform-origin: 407px 273.958px; vertical-align: baseline; \"\u003e\u003cdiv style=\"block-size: 21px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 10.5px; text-align: left; transform-origin: 384px 10.5px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 237.658px 7.75px; transform-origin: 237.658px 7.75px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eWhat is the total resistance of a network of resistors in series and in parallel?\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003cdiv style=\"block-size: 21px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 10.5px; text-align: left; transform-origin: 384px 10.5px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 318.567px 7.75px; transform-origin: 318.567px 7.75px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eA matrix R contains the resistances (in Ohm) of resistors, which are connected in series and in parallel:\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003cdiv style=\"block-size: 150.75px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 75.375px; text-align: left; transform-origin: 384px 75.375px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cimg class=\"imageNode\" style=\"vertical-align: baseline;width: 222px;height: 145px\" src=\"data:image/png;base64,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\" data-image-state=\"image-loaded\" width=\"222\" height=\"145\"\u003e\u003c/div\u003e\u003cdiv style=\"block-size: 63px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 31.5px; text-align: left; transform-origin: 384px 31.5px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 373.733px 7.75px; transform-origin: 373.733px 7.75px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eThe network consists of one or more 'strings' of resistors in series, each of which is connected in parallel with the others. Each row of the matrix contains the resistances of the resistors in that 'string', and all rows of resistors are connected in parallel. An input matrix may thus be represented as:\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003cdiv style=\"background-color: rgb(247, 247, 247); block-size: 81.7333px; border-bottom-left-radius: 4px; border-bottom-right-radius: 4px; border-end-end-radius: 4px; border-end-start-radius: 4px; border-start-end-radius: 4px; border-start-start-radius: 4px; border-top-left-radius: 4px; border-top-right-radius: 4px; margin-block-end: 10px; margin-block-start: 10px; margin-bottom: 10px; margin-inline-end: 3px; margin-inline-start: 3px; margin-left: 3px; margin-right: 3px; margin-top: 10px; perspective-origin: 404px 40.8667px; transform-origin: 404px 40.8667px; margin-left: 3px; margin-top: 10px; margin-bottom: 10px; margin-right: 3px; \"\u003e\u003cdiv style=\"background-color: rgba(0, 0, 0, 0); block-size: 20.4333px; border-bottom-left-radius: 0px; border-bottom-right-radius: 0px; border-end-end-radius: 0px; border-end-start-radius: 0px; border-inline-end-color: rgb(233, 233, 233); border-inline-end-style: solid; border-inline-end-width: 1px; border-inline-start-color: rgb(233, 233, 233); border-inline-start-style: solid; border-inline-start-width: 1px; border-left-color: rgb(233, 233, 233); border-left-style: solid; border-left-width: 1px; border-right-color: rgb(233, 233, 233); border-right-style: solid; border-right-width: 1px; border-start-end-radius: 0px; border-start-start-radius: 0px; border-top-left-radius: 0px; border-top-right-radius: 0px; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; min-block-size: 18px; min-height: 18px; padding-inline-start: 4px; padding-left: 4px; perspective-origin: 404px 10.2167px; transform-origin: 404px 10.2167px; white-space: nowrap; \"\u003e\u003cspan style=\"block-size: auto; border-inline-end-color: rgb(0, 0, 0); border-inline-end-style: none; border-inline-end-width: 0px; border-inline-start-color: rgb(0, 0, 0); border-inline-start-style: none; border-inline-start-width: 0px; border-left-color: rgb(0, 0, 0); border-left-style: none; border-left-width: 0px; border-right-color: rgb(0, 0, 0); border-right-style: none; border-right-width: 0px; display: inline; margin-inline-end: 45px; margin-right: 45px; min-block-size: 0px; min-height: 0px; padding-inline-start: 0px; padding-left: 0px; perspective-origin: 80.85px 8.25px; tab-size: 4; transform-origin: 80.85px 8.25px; unicode-bidi: normal; white-space: pre; margin-right: 45px; \"\u003e\u003cspan style=\"margin-inline-end: 0px; margin-right: 0px; \"\u003eR = [120 200 1500 50;\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003cdiv style=\"background-color: rgba(0, 0, 0, 0); block-size: 20.4333px; border-bottom-left-radius: 0px; border-bottom-right-radius: 0px; border-end-end-radius: 0px; border-end-start-radius: 0px; border-inline-end-color: rgb(233, 233, 233); border-inline-end-style: solid; border-inline-end-width: 1px; border-inline-start-color: rgb(233, 233, 233); border-inline-start-style: solid; border-inline-start-width: 1px; border-left-color: rgb(233, 233, 233); border-left-style: solid; border-left-width: 1px; border-right-color: rgb(233, 233, 233); border-right-style: solid; border-right-width: 1px; border-start-end-radius: 0px; border-start-start-radius: 0px; border-top-left-radius: 0px; border-top-right-radius: 0px; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; min-block-size: 18px; min-height: 18px; padding-inline-start: 4px; padding-left: 4px; perspective-origin: 404px 10.2167px; transform-origin: 404px 10.2167px; white-space: nowrap; \"\u003e\u003cspan style=\"block-size: auto; border-inline-end-color: rgb(0, 0, 0); border-inline-end-style: none; border-inline-end-width: 0px; border-inline-start-color: rgb(0, 0, 0); border-inline-start-style: none; border-inline-start-width: 0px; border-left-color: rgb(0, 0, 0); border-left-style: none; border-left-width: 0px; border-right-color: rgb(0, 0, 0); border-right-style: none; border-right-width: 0px; display: inline; margin-inline-end: 45px; margin-right: 45px; min-block-size: 0px; min-height: 0px; padding-inline-start: 0px; padding-left: 0px; perspective-origin: 77px 8.25px; tab-size: 4; transform-origin: 77px 8.25px; unicode-bidi: normal; white-space: pre; margin-right: 45px; \"\u003e\u003cspan style=\"margin-inline-end: 0px; margin-right: 0px; \"\u003e     500 50 NaN NaN;\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003cdiv style=\"background-color: rgba(0, 0, 0, 0); block-size: 20.4333px; border-bottom-left-radius: 0px; border-bottom-right-radius: 0px; border-end-end-radius: 0px; border-end-start-radius: 0px; border-inline-end-color: rgb(233, 233, 233); border-inline-end-style: solid; border-inline-end-width: 1px; border-inline-start-color: rgb(233, 233, 233); border-inline-start-style: solid; border-inline-start-width: 1px; border-left-color: rgb(233, 233, 233); border-left-style: solid; border-left-width: 1px; border-right-color: rgb(233, 233, 233); border-right-style: solid; border-right-width: 1px; border-start-end-radius: 0px; border-start-start-radius: 0px; border-top-left-radius: 0px; border-top-right-radius: 0px; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; min-block-size: 18px; min-height: 18px; padding-inline-start: 4px; padding-left: 4px; perspective-origin: 404px 10.2167px; transform-origin: 404px 10.2167px; white-space: nowrap; \"\u003e\u003cspan style=\"block-size: auto; border-inline-end-color: rgb(0, 0, 0); border-inline-end-style: none; border-inline-end-width: 0px; border-inline-start-color: rgb(0, 0, 0); border-inline-start-style: none; border-inline-start-width: 0px; border-left-color: rgb(0, 0, 0); border-left-style: none; border-left-width: 0px; border-right-color: rgb(0, 0, 0); border-right-style: none; border-right-width: 0px; display: inline; margin-inline-end: 45px; margin-right: 45px; min-block-size: 0px; min-height: 0px; padding-inline-start: 0px; padding-left: 0px; perspective-origin: 84.7px 8.25px; tab-size: 4; transform-origin: 84.7px 8.25px; unicode-bidi: normal; white-space: pre; margin-right: 45px; \"\u003e\u003cspan style=\"margin-inline-end: 0px; margin-right: 0px; \"\u003e     3000 NaN NaN NaN;\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003cdiv style=\"background-color: rgba(0, 0, 0, 0); block-size: 20.4333px; border-bottom-left-radius: 0px; border-bottom-right-radius: 0px; border-end-end-radius: 0px; border-end-start-radius: 0px; border-inline-end-color: rgb(233, 233, 233); border-inline-end-style: solid; border-inline-end-width: 1px; border-inline-start-color: rgb(233, 233, 233); border-inline-start-style: solid; border-inline-start-width: 1px; border-left-color: rgb(233, 233, 233); border-left-style: solid; border-left-width: 1px; border-right-color: rgb(233, 233, 233); border-right-style: solid; border-right-width: 1px; border-start-end-radius: 0px; border-start-start-radius: 0px; border-top-left-radius: 0px; border-top-right-radius: 0px; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; min-block-size: 18px; min-height: 18px; padding-inline-start: 4px; padding-left: 4px; perspective-origin: 404px 10.2167px; transform-origin: 404px 10.2167px; white-space: nowrap; \"\u003e\u003cspan style=\"block-size: auto; border-inline-end-color: rgb(0, 0, 0); border-inline-end-style: none; border-inline-end-width: 0px; border-inline-start-color: rgb(0, 0, 0); border-inline-start-style: none; border-inline-start-width: 0px; border-left-color: rgb(0, 0, 0); border-left-style: none; border-left-width: 0px; border-right-color: rgb(0, 0, 0); border-right-style: none; border-right-width: 0px; display: inline; margin-inline-end: 45px; margin-right: 45px; min-block-size: 0px; min-height: 0px; padding-inline-start: 0px; padding-left: 0px; perspective-origin: 80.85px 8.25px; tab-size: 4; transform-origin: 80.85px 8.25px; unicode-bidi: normal; white-space: pre; margin-right: 45px; \"\u003e\u003cspan style=\"margin-inline-end: 0px; margin-right: 0px; \"\u003e     460 180 900 NaN]\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv style=\"block-size: 42px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 10px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 10px; perspective-origin: 384px 21px; text-align: left; transform-origin: 384px 21px; white-space: pre-wrap; margin-left: 4px; margin-top: 10px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 376.442px 7.75px; transform-origin: 376.442px 7.75px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eSince there must be as many columns in the matrix as the maximum number of resistors in any 'string', NaNs are used to 'pad out' any row in which that string has fewer resistors.\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003cdiv style=\"block-size: 21px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 10.5px; text-align: left; transform-origin: 384px 10.5px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 191px 7.75px; transform-origin: 191px 7.75px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eThe simple case in the figure above would be represented as:\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003cdiv style=\"background-color: rgb(247, 247, 247); block-size: 20.4333px; border-bottom-left-radius: 4px; border-bottom-right-radius: 4px; border-end-end-radius: 4px; border-end-start-radius: 4px; border-start-end-radius: 4px; border-start-start-radius: 4px; border-top-left-radius: 4px; border-top-right-radius: 4px; margin-block-end: 10px; margin-block-start: 10px; margin-bottom: 10px; margin-inline-end: 3px; margin-inline-start: 3px; margin-left: 3px; margin-right: 3px; margin-top: 10px; perspective-origin: 404px 10.2167px; transform-origin: 404px 10.2167px; margin-left: 3px; margin-top: 10px; margin-bottom: 10px; margin-right: 3px; \"\u003e\u003cdiv style=\"background-color: rgba(0, 0, 0, 0); border-bottom-left-radius: 0px; border-bottom-right-radius: 0px; border-end-end-radius: 0px; border-end-start-radius: 0px; border-inline-end-color: rgb(233, 233, 233); border-inline-end-style: solid; border-inline-end-width: 1px; border-inline-start-color: rgb(233, 233, 233); border-inline-start-style: solid; border-inline-start-width: 1px; border-left-color: rgb(233, 233, 233); border-left-style: solid; border-left-width: 1px; border-right-color: rgb(233, 233, 233); border-right-style: solid; border-right-width: 1px; border-start-end-radius: 0px; border-start-start-radius: 0px; border-top-left-radius: 0px; border-top-right-radius: 0px; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; min-block-size: 18px; min-height: 18px; padding-inline-start: 4px; padding-left: 4px; white-space: nowrap; \"\u003e\u003cspan style=\"block-size: auto; border-inline-end-color: rgb(0, 0, 0); border-inline-end-style: none; border-inline-end-width: 0px; border-inline-start-color: rgb(0, 0, 0); border-inline-start-style: none; border-inline-start-width: 0px; border-left-color: rgb(0, 0, 0); border-left-style: none; border-left-width: 0px; border-right-color: rgb(0, 0, 0); border-right-style: none; border-right-width: 0px; display: inline; margin-inline-end: 45px; margin-right: 45px; min-block-size: 0px; min-height: 0px; padding-inline-start: 0px; padding-left: 0px; perspective-origin: 73.15px 8.25px; tab-size: 4; transform-origin: 73.15px 8.25px; unicode-bidi: normal; white-space: pre; margin-right: 45px; \"\u003e\u003cspan style=\"margin-inline-end: 0px; margin-right: 0px; \"\u003eR = [R1 R2; R3 NaN]\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv style=\"block-size: 21px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 10px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 10px; perspective-origin: 384px 10.5px; text-align: left; transform-origin: 384px 10.5px; white-space: pre-wrap; margin-left: 4px; margin-top: 10px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 361.067px 7.75px; transform-origin: 361.067px 7.75px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eYour function should take the matrix R as its input and return the total resistance (in Ohm) of the network of resistors.\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003cdiv style=\"block-size: 21px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 10.5px; text-align: left; transform-origin: 384px 10.5px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 29.5583px 7.75px; transform-origin: 29.5583px 7.75px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eHint: see \u003c/span\u003e\u003c/span\u003e\u003ca target='_blank' href = \"https://en.wikipedia.org/wiki/Resistor#Series_and_parallel_resistors\"\u003e\u003cspan style=\"\"\u003e\u003cspan style=\"\"\u003ehttps://en.wikipedia.org/wiki/Resistor#Series_and_parallel_resistors\u003c/span\u003e\u003c/span\u003e\u003c/a\u003e\u003c/div\u003e\u003c/div\u003e\u003c/div\u003e","function_template":"function totalRes = resistance(R)\r\n  totalRes = R;\r\nend","test_suite":"%%\r\nR = 10;\r\ny_correct = 10;\r\nassert(abs(resistance(R)-y_correct)\u003c0.0001)\r\n\r\n%%\r\nR = ones(10);\r\ny_correct = 1;\r\nassert(abs(resistance(R)-y_correct)\u003c0.0001)\r\n\r\n%%\r\nR = [1000 120 5250 250];\r\ny_correct = 6620;\r\nassert(abs(resistance(R)-y_correct)\u003c0.0001)\r\n\r\n%%\r\nR = [1000 120 5250 250 NaN];\r\ny_correct = 6620;\r\nassert(abs(resistance(R)-y_correct)\u003c0.0001)\r\n\r\n%%\r\nR = [15000 2500 120000; 10 350 1250];\r\ny_correct = 1591.366544461218;\r\nassert(abs(resistance(R)-y_correct)\u003c0.0001)\r\n\r\n%%\r\nR = [120 200 1500 50;\r\n     500 50 NaN NaN;\r\n     3000 NaN NaN NaN;\r\n     460 180 900 NaN];\r\ny_correct = 299.7938774;\r\nassert(abs(resistance(R)-y_correct)\u003c0.0001)\r\n\r\n%%\r\n%Anti-cheating #1\r\nR = randi(2000,[50,50]);\r\nRs = num2str(sum(R,2));\r\ns=0;for ii=1:length(Rs),s=s+str2num(Rs(ii,:)).^-1;end\r\ny_correct = s^-1;\r\nassert(abs(resistance(R)-y_correct)\u003c0.0001)\r\n\r\n%%\r\n%Anti-cheating #2\r\ns=importdata('resistance.m');\r\ny_correct=false;\r\nassert(isequal(sum(contains(s,'regexp')),y_correct),'Regexp not allowed');\r\nassert(isequal(sum(contains(s,'assert')),y_correct),'Assert not allowed');","published":true,"deleted":false,"likes_count":1,"comments_count":0,"created_by":437780,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":27,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2022-01-07T14:02:03.000Z","updated_at":"2026-02-19T15:38:06.000Z","published_at":"2022-01-07T14:34:14.000Z","restored_at":null,"restored_by":null,"spam":false,"simulink":false,"admin_reviewed":false,"description_opc":"{\"parts\":[{\"partUri\":\"/matlab/document.xml\",\"contentType\":\"application/vnd.mathworks.matlab.code.document+xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\"?\u003e\u003cw:document xmlns:w=\\\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\\\"\u003e\u003cw:body\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eWhat is the total resistance of a network of resistors in series and in parallel?\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eA matrix R contains the resistances (in Ohm) of resistors, which are connected in series and in parallel:\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:customXml w:element=\\\"image\\\"\u003e\u003cw:customXmlPr\u003e\u003cw:attr w:name=\\\"height\\\" w:val=\\\"145\\\"/\u003e\u003cw:attr w:name=\\\"width\\\" w:val=\\\"222\\\"/\u003e\u003cw:attr w:name=\\\"verticalAlign\\\" w:val=\\\"baseline\\\"/\u003e\u003cw:attr w:name=\\\"altText\\\" w:val=\\\"\\\"/\u003e\u003cw:attr w:name=\\\"relationshipId\\\" w:val=\\\"rId1\\\"/\u003e\u003c/w:customXmlPr\u003e\u003c/w:customXml\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eThe network consists of one or more 'strings' of resistors in series, each of which is connected in parallel with the others. Each row of the matrix contains the resistances of the resistors in that 'string', and all rows of resistors are connected in parallel. An input matrix may thus be represented as:\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"code\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e\u003c![CDATA[R = [120 200 1500 50;\\n     500 50 NaN NaN;\\n     3000 NaN NaN NaN;\\n     460 180 900 NaN]]]\u003e\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eSince there must be as many columns in the matrix as the maximum number of resistors in any 'string', NaNs are used to 'pad out' any row in which that string has fewer resistors.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eThe simple case in the figure above would be represented as:\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"code\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e\u003c![CDATA[R = [R1 R2; R3 NaN]]]\u003e\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eYour function should take the matrix R as its input and return the total resistance (in Ohm) of the network of resistors.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eHint: see \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:hyperlink w:docLocation=\\\"https://en.wikipedia.org/wiki/Resistor#Series_and_parallel_resistors\\\"\u003e\u003cw:r\u003e\u003cw:t\u003ehttps://en.wikipedia.org/wiki/Resistor#Series_and_parallel_resistors\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:hyperlink\u003e\u003c/w:p\u003e\u003c/w:body\u003e\u003c/w:document\u003e\",\"relationship\":[{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/image\",\"target\":\"/media/image1.png\",\"relationshipId\":\"rId1\"}]},{\"partUri\":\"/media/image1.png\",\"contentType\":\"image/png\",\"content\":\"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAbwAAAEhCAMAAAAzluVwAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAJzUExURf///4yMjEJCQk5OTmNjYwAAAA8PD8/Pz1RUVNPT07a2tru7u/b29u3t7fv7+/Dw8Kqqqq6urn5+fsPDwx8fHyMjI/7+/sLCwoWFhePj45SUlF9fX2JiYpeXl/r6+tTU1KioqICAgPLy8rKysnx8fFpaWgsLC21tbf39/QQEBMDAwJ+fn5GRkWFhYQwMDKamprm5uVhYWAUFBXV1ddzc3Le3t/z8/JWVlVBQUFtbWwICAiQkJFNTU+vr64mJienp6b29vWpqagYGBmhoaM7OzhERERISEkxMTObm5hYWFvn5+dnZ2SAgIGVlZX9/fwcHBwgICNjY2AMDA6KioqOjoyoqKnZ2dn19faurqwEBAUNDQ1ZWVqGhobGxsUtLSw0NDTU1NYKCgvHx8e7u7tXV1VdXV11dXSIiIuXl5e/v7xUVFWZmZkhISMzMzBQUFI+Pj9ra2vj4+KSkpBwcHJiYmMXFxcbGxiYmJjExMS4uLvT09MTExIuLi7q6ukFBQeLi4uHh4SkpKcrKyuTk5E9PTzY2Nr+/vxcXF56enoGBgcjIyPPz80dHR+zs7ISEhHt7e29vb3FxcYeHh6ysrBgYGDs7O/X19aenpzo6Omtra0VFRXR0dDw8PDIyMjMzMxsbG2BgYHl5eZKSkjc3N42NjSEhIdfX19vb22lpaVlZWVxcXL6+vhMTE4qKitLS0oaGhh0dHS8vL0pKSrCwsLS0tCcnJysrK83NzQoKCpOTk8nJyZmZmR4eHoODg2dnZ9/f3/f397W1tYiIiG5ubujo6GRkZKmpqQ4ODiUlJeDg4MvLy62tra+vrwkJCZ2dnY6OjmxsbFMSZGYAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAnMSURBVHhe7d37fxTVGcfxk9gnEpKgIsYILaApMZuCRS4JRkCNoEnEJoQirLXFKlRuQWNBEbxVidpG7M3S2tLallrbam1Lrdqrrb1gL9r+ST1n5kl2diazDOs5s/NMvu9f9pnZ7Mx5zeeV7G4SggIAAAAAAAAAAAAAAAAQrq6+/jweQZoPETXwOOn8WbNmNfIMWTZNvNlE1MQzZBniZVNzy5Q5vCsqHO+ClpYLdbyLWlou4D1QC3N1BHYx74oKx5vHjyC6pJV3QQ0gnmCIJ9ilbVMu411R4Xjz29oW6HIfbmv7CO+BzArH0/BqUwrEEwzxBJsm3sKKbwwhO6aJB1IgnmCIJxjiCYZ4giGeYIgny6LFixdPvY9DPFkuJ6IreEY8YRBPMMQTDPEEQzzBEE8wxBMM8QRDvIhF7ZlS99EwvqO9fUkoXgfvb2+fzx9aciHfkxG8aOuu1JdEjmA8QTp51bYhXgoQz0C8MjpeoSs7PrY0jO/o6lqmr0Iw3lW8v6vr4/yhJcv5ngy42m28FTxmnNBXmysRT0O8CMRzDPEMxItAPMcQz0C8CMRzDPEMxItAPMcQz1i1evXqbp4RzyMnXhnEMxDPMcSLQDwD8RxDvAjEMxDPMcSLQDwD8RxDvAjEMxDPMcSLQDwD8RxDvAjEMxDPMcSLQDwD8RxDvAjEMxDPMcSLQDxDaLyeNWuu4THjEE8wxBMM8QRDPMEQTzDEEwzxBEM8wRBPMMQTDPEEQzzBEE8wxBMM8QRDPMEQTzDEEwzxBEM8wRBPMMQTDPEEQzzBxMfT65/U23Dt2p51vD81fHIj7QXkKZ6nY30r35MSPu+UFBeQh3iTF2vhddff0Ed0I2+mRC+Ap9QXkKd4xoaNRLN5TkcgnrHhpvQWkLd4qofoZh7TEYrnLSClL5y5i9dPNMBjOsLxzAIQL5lwvEGiPh7TEY5nFoB4yYTj3UK0icd0hOOZBSBeMuF4c4lu5TEd4Xif0AtAvGRC8ZqGaHgzz+kIxWsaTm8BeYrXva5pWS+NbOHNlATi8QI+yZvO5SFema1dfEda+LxTUlxAzuLd1pXS000Jn5mluoAcfdlsnke0zR/TpBfAU+oLyNNz3nb9DivdFytGKZ7aXkx3AXmKp+qJ6nlMTyCeul0vAF82kwvGaywQBV5rLvpUsexVvBvBeGYBd/Cs1Kc/M1DYcedn7+JN+3IVz5xx4G6ed+7qDV5XZ8pOElhA9+f0PcY9u/0d9uUr3p69RPt4c4T2j6b9maf2HNAL8Md7aajtvrH++z9PC/wd9uUrnjpIVDzkj/X6NvV43gIe8KYHyX+z/gAd8G4dyFm8zsNED83hjVrEKy1gtH2ht+cIDXu3DuQsnjqqtx/muRbx1NFicAHaI/QoT9blLZ5aQtTxGM+1iKeu0Qt4nGftri+MPMGjdbmL92QH0bHJPbWI5y2AZ6X6x+kgj/aJj1dRGvEqeurpoWd4dADxHOr84si8L/HsAuK5M/EsnTf5LQMnEM+Z4+PF58qejq1DPFcGx4sOn+48iOfKl+krbj/v8hxPv1lmvCNlw3x27SneZRviucInNxAPIhBPMAnxRpdZ91U+dDKr+VEWfY0P/YFIiPd1vUbLnudDJ7O+9Pxpyzf40B8I4iWAeNUz8YoW6cOdezx+rBUzLV4jzzbsqybeCZ5teBTxqoZ4CSBeDMSrHuIlgHgxEK96iJcA4sVAvOohXgKIFyMv8VrjDI5N+ab9eE/zoY1uPmNIYAFt9uN9iw9tdPIZI/jDY9U43ip9+kQsxzt3luMl8sJZ8iFeQogXgXiVCIj37e9M5+R3p9yjP8hyvBV8aGMXnzHke3y39qJegOV4V/Ghje/zGcuNiIjXw3OsmflqcwjxpoN4CSBeDMSrHuIlgHgxEK96iJcA4sVAvOohXgKIF2OmxfvBD+05VU28H/GDbXhphsWz7NzjWYZ41UO8s0G8eDMm3sSPrXuZD51MCz/KosAfuIqRk3gzE+IJhniCIZ5giCcY4gmGeIIhnmCIJ1j2472sT7+UZyij4/0ky/GOrxzQp+/76SLehknN67fqK7PiZ5WvTC3jvfKqPrkx8nPeA77XzC+Je1fmF5U++WoY75D+wjDJyp/iyo3NG/myaNsq1KtdvBO/9Ffn6R3lvaBU56/4qhjFCn+ss3bx7i37Idlp3gtKmX9MWlLhJ3+O4xVeifWgvzZW2MMPAnWar4mvuJgvWNTV+m6H8ZK7mB8Eai9fkkQyEe/X/CAw7/CSy0Q8/i8LQakDfEkScRVv5+uV/IbP7utz99/iivMsXxP2DF+w6fFjUtZT9mpzDe8Fpe7na+I7xXszZewSXp1ReI33glLdb/BV8TzCe7Plzbd4edpveR8YjTv4smgrz/LN6Vr5nfkrC8bQ73kP+Eb/wFemd25G2yk18cdNeoFv/elt3oZJE5e/pK/MyNo3eTuTzA9j5/MMZfqIbszsp50HP0mPleAn6TWGeLEQTzDEEwzxBEM8wRBPMMQTDPEEQzzfZY9b92c+tDuI5wv8GqQtf+FDu4N4PsRzAvFiIZ5Pxzv1jj0vIJ4ntXh/5dGGJ4qIZyBeLMTzIZ4TiBcL8XyI5wTixUI8H+I5gXixEM+HeE6YeKfnurDgZEnBfrytfGhtP5/RsgT/f16NmXipsB0vFYjnQzz7EK+SjMdrPeJKy+6SBvvxtvChtb/xGe0b5BPOaCJfbYIP8QRDPMEQTzDEEwzxBEM8wRBPMMQTTMcrDtvTR4iXHh3PNsRLC+IJ9vdd1p3PhwYAAAAAAAAAABCtyN+t1Hobrl3bs473gwCBeJ6O9dn+PWUI0PF4Uguvu/4G80fVeRMyLxDP2LCRaDbPkHWheKqH6GYeIevC8fqJBniErAvHGyTq4xGyLhzvFqJNPELWhePNJbqVR8i6ULymIRrezDNkXSBe97qmZb00soU3IfN0vDJbu/gOyL7yeLd14ZtjgpS+bDZvItrGM4gQeM7brt/i4cWKJIF4qp6onkeQIBivsUA0+Vqz9R/79xbO3PncFbwNGRSMp64kGrjbm7pn8UuYd/u9bciisnh7DhDt815v1tGOpf8c233H87TAuweyqCyeOkhUPGSGd+kib8dyetW7hSwqj9d5mOihOXrY2dXt7ThCZ7xbyKLyeOqofpp7mGdjOd3OE2RPKJ5aQtTxGM+Dq+o6Gv7FG5A94XhPdhAd80f9Sdiw5D5/BmF0vMJJ/OtzocZWLT1T/DdvgDiX0mGeQIz/zG/2bifoPe8WBBmn973b1+lF7xYE+S+9V/f22O7399L/eA+IMeeY+a609sZx3gNytG6pv2nkzPg7J3gbAAAAAAAAAABAKfV/zw7Hw2SqQeUAAAAASUVORK5CYII=\",\"relationship\":null}],\"relationships\":[{\"relationshipType\":\"http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Resistance of a light bulb","description":"The current through two identical light bulbs connected in series is C Amperes.  The total voltage across both bulbs is V Volts.  Find the resistance R in a single light bulb.\r\n","description_html":"\u003cdiv style = \"text-align: start; line-height: 20.44px; min-height: 0px; white-space: normal; color: rgb(0, 0, 0); font-family: Menlo, Monaco, Consolas, monospace; font-style: normal; font-size: 14px; font-weight: 400; text-decoration: none solid rgb(0, 0, 0); white-space: normal; \"\u003e\u003cdiv style=\"block-size: 157px; display: block; min-width: 0px; padding-block-start: 0px; padding-top: 0px; perspective-origin: 407px 78.5px; transform-origin: 407px 78.5px; vertical-align: baseline; \"\u003e\u003cdiv style=\"block-size: 42px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 21px; text-align: left; transform-origin: 384px 21px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 0px 0px; transform-origin: 0px 0px; \"\u003e\u003cspan style=\"\"\u003eThe current through two identical light bulbs connected in series is C Amperes.\u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 0px 0px; transform-origin: 0px 0px; \"\u003e\u003cspan style=\"\"\u003e  \u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 0px 0px; transform-origin: 0px 0px; \"\u003e\u003cspan style=\"\"\u003eThe total voltage across both bulbs is V Volts.\u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 0px 0px; transform-origin: 0px 0px; \"\u003e\u003cspan style=\"\"\u003e  \u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 0px 0px; transform-origin: 0px 0px; \"\u003e\u003cspan style=\"\"\u003eFind the resistance R in a single light bulb.\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003cdiv style=\"block-size: 106px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 53px; text-align: left; transform-origin: 384px 53px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cimg class=\"imageNode\" style=\"vertical-align: baseline\" 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data-image-state=\"image-loaded\"\u003e\u003c/div\u003e\u003c/div\u003e\u003c/div\u003e","function_template":"function R = findRes(C,V) % Do not edit this line.\r\n  % insert your code here\r\n  \r\nend % Do not edit this line.\r\n","test_suite":"%%\r\nassert(isequal(findRes (0.25,110),220));\r\n%%\r\nassert(isequal(findRes(0.2,20),50));","published":true,"deleted":false,"likes_count":6,"comments_count":3,"created_by":542228,"edited_by":542228,"edited_at":"2022-09-08T18:46:47.000Z","deleted_by":null,"deleted_at":null,"solvers_count":930,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2022-08-31T14:38:51.000Z","updated_at":"2026-04-16T20:33:21.000Z","published_at":"2022-08-31T14:38:51.000Z","restored_at":null,"restored_by":null,"spam":false,"simulink":false,"admin_reviewed":false,"description_opc":"{\"parts\":[{\"partUri\":\"/matlab/document.xml\",\"contentType\":\"application/vnd.mathworks.matlab.code.document+xml\",\"content\":\"\u003c?xml 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Parallel Resistance","description":"Three resistors connected in parallel have resistances R1, R 2, and R 3, respectively.  Return the total resistance R total  of the three resistors together to two decimal places?\r\n","description_html":"\u003cdiv style = \"text-align: start; line-height: 20.4333px; min-height: 0px; white-space: normal; color: rgb(0, 0, 0); font-family: Menlo, Monaco, Consolas, monospace; font-style: normal; font-size: 14px; font-weight: 400; text-decoration: rgb(0, 0, 0); white-space: normal; \"\u003e\u003cdiv style=\"block-size: 144.5px; display: block; min-width: 0px; padding-block-start: 0px; padding-top: 0px; perspective-origin: 407px 72.25px; transform-origin: 407px 72.25px; vertical-align: baseline; \"\u003e\u003cdiv style=\"block-size: 42px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 21px; text-align: left; transform-origin: 384px 21px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 178px 8px; transform-origin: 178px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eThree resistors connected in parallel have resistances R\u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 4px 8px; transform-origin: 4px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"font-style: italic; \"\u003e1\u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 4px 8px; transform-origin: 4px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"font-style: italic; \"\u003e, \u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 5px 8px; transform-origin: 5px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eR\u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 6px 8px; transform-origin: 6px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"font-style: italic; \"\u003e 2\u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 4px 8px; transform-origin: 4px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"font-style: italic; \"\u003e, \u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 19px 8px; transform-origin: 19px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eand R\u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 6px 8px; transform-origin: 6px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"font-style: italic; \"\u003e 3\u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 4px 8px; transform-origin: 4px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"font-style: italic; \"\u003e, \u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 39px 8px; transform-origin: 39px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003erespectively.\u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 4px 8px; transform-origin: 4px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003e  \u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 92.5px 8px; transform-origin: 92.5px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eReturn the total resistance R \u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 13.5px 8px; transform-origin: 13.5px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"font-style: italic; \"\u003etotal\u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 4px 8px; transform-origin: 4px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003e  \u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 167px 8px; transform-origin: 167px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eof the three resistors together to two decimal places?\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003cdiv style=\"block-size: 93.5px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 46.75px; text-align: left; transform-origin: 384px 46.75px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cimg class=\"imageNode\" style=\"vertical-align: baseline\" 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data-image-state=\"image-loaded\"\u003e\u003c/div\u003e\u003c/div\u003e\u003c/div\u003e","function_template":"function Rtotal = findTotalRes(R1,R2,R3) % Do not edit this line.\r\n  % insert your code here\r\n  \r\nend % Do not edit this line.\r\n","test_suite":"%%\r\nassert(isequal(findTotalRes(100,200,300),54.55));\r\n%%\r\nassert(isequal(findTotalRes(20,40,60),10.91));\r\n%%\r\nassert(isequal(findTotalRes(45,45,45),15));\r\n\r\n","published":true,"deleted":false,"likes_count":6,"comments_count":1,"created_by":542228,"edited_by":223089,"edited_at":"2022-10-11T07:58:18.000Z","deleted_by":null,"deleted_at":null,"solvers_count":896,"test_suite_updated_at":"2022-10-11T07:58:18.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2022-08-31T15:14:42.000Z","updated_at":"2026-04-16T20:34:26.000Z","published_at":"2022-08-31T15:14:42.000Z","restored_at":null,"restored_by":null,"spam":false,"simulink":false,"admin_reviewed":false,"description_opc":"{\"parts\":[{\"partUri\":\"/matlab/document.xml\",\"contentType\":\"application/vnd.mathworks.matlab.code.document+xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\"?\u003e\u003cw:document 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R\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:rPr\u003e\u003cw:i/\u003e\u003c/w:rPr\u003e\u003cw:t\u003e 3\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:rPr\u003e\u003cw:i/\u003e\u003c/w:rPr\u003e\u003cw:t\u003e, \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003erespectively.\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e  \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003eReturn the total resistance R \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:rPr\u003e\u003cw:i/\u003e\u003c/w:rPr\u003e\u003cw:t\u003etotal\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e  \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003eof the three resistors together to two decimal places?\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:customXml 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Current through resistor","description":"Three resistors (R2, R3, R4) are connected in parallel as shown in the figure.  If this combination is connected in series with a battery V (volts) and a resistor R1 (ohms).  Find the current I (in amps) through the R4 resistor? Round to the nearest 100th.\r\n","description_html":"\u003cdiv style = \"text-align: start; line-height: 20.4333px; min-height: 0px; white-space: normal; color: rgb(0, 0, 0); font-family: Menlo, Monaco, Consolas, monospace; font-style: normal; font-size: 14px; font-weight: 400; text-decoration: rgb(0, 0, 0); white-space: normal; \"\u003e\u003cdiv style=\"block-size: 154.5px; display: block; min-width: 0px; padding-block-start: 0px; padding-top: 0px; perspective-origin: 407px 77.25px; transform-origin: 407px 77.25px; vertical-align: baseline; \"\u003e\u003cdiv style=\"block-size: 63px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 31.5px; text-align: left; transform-origin: 384px 31.5px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 243px 8px; transform-origin: 243px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eThree resistors (R2, R3, R4) are connected in parallel as shown in the figure.\u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 4px 8px; transform-origin: 4px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003e  \u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 129px 8px; transform-origin: 129px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eIf this combination is connected in series with a battery V (volts) and a resistor R1 (ohms).\u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 4px 8px; transform-origin: 4px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003e  \u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 209.5px 8px; transform-origin: 209.5px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eFind the current I (in amps) through the R4 resistor? Round to the nearest 100\u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 6px 8px; transform-origin: 6px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eth\u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 2px 8px; transform-origin: 2px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003e.\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003cdiv style=\"block-size: 82.5px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; 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data-image-state=\"image-loaded\"\u003e\u003c/div\u003e\u003c/div\u003e\u003c/div\u003e","function_template":"function I = findCurrent(V,R1,R2,R3,R4) % Do not edit this line.\r\n  % insert your code here\r\nend % Do not edit this line.\r\n\r\n","test_suite":"%%\r\nassert(isequal(findCurrent(12,2,4,6,10),0.59));\r\n\r\n%%\r\nassert(isequal(findCurrent(20,0,8,8,4),5));\r\n\r\n%%\r\nassert(isequal(findCurrent(72,7,3,3,3),3));","published":true,"deleted":false,"likes_count":8,"comments_count":1,"created_by":542228,"edited_by":223089,"edited_at":"2022-10-06T07:24:28.000Z","deleted_by":null,"deleted_at":null,"solvers_count":557,"test_suite_updated_at":"2022-10-06T07:24:28.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2022-09-02T16:06:11.000Z","updated_at":"2026-04-16T00:41:11.000Z","published_at":"2022-09-02T16:06:11.000Z","restored_at":null,"restored_by":null,"spam":false,"simulink":false,"admin_reviewed":false,"description_opc":"{\"parts\":[{\"partUri\":\"/matlab/document.xml\",\"contentType\":\"application/vnd.mathworks.matlab.code.document+xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\"?\u003e\u003cw:document xmlns:w=\\\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\\\"\u003e\u003cw:body\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eThree resistors (R2, R3, R4) are connected in parallel as shown in the figure.\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e  \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003eIf this combination is connected in series with a battery V (volts) and a resistor R1 (ohms).\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e  \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003eFind the current I (in amps) through the R4 resistor? 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style=\"block-size: 21px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 10.5px; text-align: left; transform-origin: 384px 10.5px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 148.567px 7.75px; transform-origin: 148.567px 7.75px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eA vector R contains the resistances (in Ohm) of \u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 3.89167px 7.75px; transform-origin: 3.89167px 7.75px; unicode-bidi: normal; \"\u003e\u003cspan style=\"font-style: italic; \"\u003en\u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 126.417px 7.75px; transform-origin: 126.417px 7.75px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003e resistors, which are connected in series:\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003cdiv style=\"block-size: 90.75px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 45.375px; text-align: left; transform-origin: 384px 45.375px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cimg class=\"imageNode\" style=\"vertical-align: baseline;width: 361px;height: 85px\" src=\"data:image/png;base64,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\" data-image-state=\"image-loaded\" width=\"361\" height=\"85\"\u003e\u003c/div\u003e\u003cdiv style=\"block-size: 21px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 10.5px; text-align: left; transform-origin: 384px 10.5px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 355.233px 7.75px; transform-origin: 355.233px 7.75px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eYour function should take the vector R as its input and return the total resistance (in Ohm) of the series of resistors.\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003cdiv style=\"block-size: 21px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 10.5px; text-align: left; transform-origin: 384px 10.5px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 29.5583px 7.75px; transform-origin: 29.5583px 7.75px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eHint: see \u003c/span\u003e\u003c/span\u003e\u003ca target='_blank' href = \"https://en.wikipedia.org/wiki/Resistor#Series_and_parallel_resistors\"\u003e\u003cspan style=\"\"\u003e\u003cspan style=\"\"\u003ehttps://en.wikipedia.org/wiki/Resistor#Series_and_parallel_resistors\u003c/span\u003e\u003c/span\u003e\u003c/a\u003e\u003c/div\u003e\u003c/div\u003e\u003c/div\u003e","function_template":"function totalRes = resistance(R)\r\n  totalRes = R;\r\nend","test_suite":"%%\r\nR = 10;\r\ny_correct = 10;\r\nassert(abs(resistance(R)-y_correct)\u003c0.000001)\r\n\r\n%%\r\nR = [1000 120 5250 250];\r\ny_correct = 6620;\r\nassert(abs(resistance(R)-y_correct)\u003c0.000001)\r\n\r\n%%\r\nR = [15000 2500 120000 10 350 1250];\r\ny_correct = 139110;\r\nassert(abs(resistance(R)-y_correct)\u003c0.000001)\r\n\r\n%%\r\n%Anti-cheating #1\r\nR = randi(2000,[1,50]);\r\nRs = num2str(R');\r\ns=0;for ii=1:length(Rs),s=s+str2num(Rs(ii,:));end\r\ny_correct = s;\r\nassert(abs(resistance(R)-y_correct)\u003c0.000001)\r\n\r\n%%\r\n%Anti-cheating #2\r\ns=importdata('resistance.m');\r\ny_correct=false;\r\nassert(isequal(sum(contains(s,'regexp')),y_correct),'Regexp not allowed');\r\nassert(isequal(sum(contains(s,'assert')),y_correct),'Assert not allowed');","published":true,"deleted":false,"likes_count":1,"comments_count":0,"created_by":437780,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":55,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2022-01-07T09:37:30.000Z","updated_at":"2026-02-10T16:37:10.000Z","published_at":"2022-01-07T10:03:27.000Z","restored_at":null,"restored_by":null,"spam":false,"simulink":false,"admin_reviewed":false,"description_opc":"{\"parts\":[{\"partUri\":\"/matlab/document.xml\",\"contentType\":\"application/vnd.mathworks.matlab.code.document+xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\"?\u003e\u003cw:document xmlns:w=\\\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\\\"\u003e\u003cw:body\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eWhat is the total resistance of a number of resistors in series?\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eA vector R contains the resistances (in Ohm) of \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:rPr\u003e\u003cw:i/\u003e\u003c/w:rPr\u003e\u003cw:t\u003en\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e resistors, which are connected in series:\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:customXml w:element=\\\"image\\\"\u003e\u003cw:customXmlPr\u003e\u003cw:attr w:name=\\\"height\\\" w:val=\\\"85\\\"/\u003e\u003cw:attr w:name=\\\"width\\\" w:val=\\\"361\\\"/\u003e\u003cw:attr w:name=\\\"verticalAlign\\\" w:val=\\\"baseline\\\"/\u003e\u003cw:attr w:name=\\\"altText\\\" w:val=\\\"\\\"/\u003e\u003cw:attr w:name=\\\"relationshipId\\\" w:val=\\\"rId1\\\"/\u003e\u003c/w:customXmlPr\u003e\u003c/w:customXml\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eYour function should take the vector R as its input and return the total resistance (in Ohm) of the series of resistors.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eHint: see \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:hyperlink w:docLocation=\\\"https://en.wikipedia.org/wiki/Resistor#Series_and_parallel_resistors\\\"\u003e\u003cw:r\u003e\u003cw:t\u003ehttps://en.wikipedia.org/wiki/Resistor#Series_and_parallel_resistors\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:hyperlink\u003e\u003c/w:p\u003e\u003c/w:body\u003e\u003c/w:document\u003e\",\"relationship\":[{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/image\",\"target\":\"/media/image1.png\",\"relationshipId\":\"rId1\"}]},{\"partUri\":\"/media/image1.png\",\"contentType\":\"image/png\",\"content\":\"data:image/png;base64,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resistance of resistors in parallel","description":"What is the total resistance of a number of resistors in parallel?\r\nA vector R contains the resistances (in Ohm) of n resistors, which are connected in parallel:\r\n\r\nYour function should take the vector R as its input and return the total resistance (in Ohm) of the parallel resistors.\r\nHint: see https://en.wikipedia.org/wiki/Resistor#Series_and_parallel_resistors","description_html":"\u003cdiv style = \"text-align: start; line-height: 20.4333px; min-height: 0px; white-space: normal; color: rgb(0, 0, 0); font-family: Menlo, Monaco, Consolas, monospace; font-style: normal; font-size: 14px; font-weight: 400; text-decoration: rgb(0, 0, 0); white-space: normal; \"\u003e\u003cdiv style=\"block-size: 267.75px; display: block; min-width: 0px; padding-block-start: 0px; padding-top: 0px; perspective-origin: 407px 133.875px; transform-origin: 407px 133.875px; vertical-align: baseline; \"\u003e\u003cdiv style=\"block-size: 21px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 10.5px; text-align: left; transform-origin: 384px 10.5px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 195.258px 7.75px; transform-origin: 195.258px 7.75px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eWhat is the total resistance of a number of resistors in parallel?\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003cdiv style=\"block-size: 21px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 10.5px; text-align: left; transform-origin: 384px 10.5px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 148.567px 7.75px; transform-origin: 148.567px 7.75px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eA vector R contains the resistances (in Ohm) of \u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 3.89167px 7.75px; transform-origin: 3.89167px 7.75px; unicode-bidi: normal; \"\u003e\u003cspan style=\"font-style: italic; \"\u003en\u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 130.317px 7.75px; transform-origin: 130.317px 7.75px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003e resistors, which are connected in parallel:\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003cdiv style=\"block-size: 147.75px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 73.875px; text-align: left; transform-origin: 384px 73.875px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cimg class=\"imageNode\" style=\"vertical-align: baseline;width: 284px;height: 142px\" src=\"data:image/png;base64,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\" data-image-state=\"image-loaded\" width=\"284\" height=\"142\"\u003e\u003c/div\u003e\u003cdiv style=\"block-size: 21px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 10.5px; text-align: left; transform-origin: 384px 10.5px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 351.358px 7.75px; transform-origin: 351.358px 7.75px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eYour function should take the vector R as its input and return the total resistance (in Ohm) of the parallel resistors.\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003cdiv style=\"block-size: 21px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 10.5px; text-align: left; transform-origin: 384px 10.5px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 29.5583px 7.75px; transform-origin: 29.5583px 7.75px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eHint: see \u003c/span\u003e\u003c/span\u003e\u003ca target='_blank' href = \"https://en.wikipedia.org/wiki/Resistor#Series_and_parallel_resistors\"\u003e\u003cspan style=\"\"\u003e\u003cspan style=\"\"\u003ehttps://en.wikipedia.org/wiki/Resistor#Series_and_parallel_resistors\u003c/span\u003e\u003c/span\u003e\u003c/a\u003e\u003c/div\u003e\u003c/div\u003e\u003c/div\u003e","function_template":"function totalRes = resistance(R)\r\n  totalRes = R;\r\nend","test_suite":"%%\r\nR = 10;\r\ny_correct = 10;\r\nassert(abs(resistance(R)-y_correct)\u003c0.0001)\r\n\r\n%%\r\nR = [1000 120 5250 250];\r\ny_correct = 73.9437;\r\nassert(abs(resistance(R)-y_correct)\u003c0.0001)\r\n\r\n%%\r\nR = [15000 2500 120000 10 350 1250];\r\ny_correct = 9.6032;\r\nassert(abs(resistance(R)-y_correct)\u003c0.0001)\r\n\r\n%%\r\n%Anti-cheating #1\r\nR = randi(2000,[1,50]);\r\nRs = num2str(R');\r\ns=0;for ii=1:length(Rs),s=s+str2num(Rs(ii,:)).^-1;end\r\ny_correct = s^-1;\r\nassert(abs(resistance(R)-y_correct)\u003c0.0001)\r\n\r\n%%\r\n%Anti-cheating #2\r\ns=importdata('resistance.m');\r\ny_correct=false;\r\nassert(isequal(sum(contains(s,'regexp')),y_correct),'Regexp not allowed');\r\nassert(isequal(sum(contains(s,'assert')),y_correct),'Assert not allowed');","published":true,"deleted":false,"likes_count":1,"comments_count":0,"created_by":437780,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":59,"test_suite_updated_at":"2022-01-07T14:37:05.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2022-01-07T13:05:22.000Z","updated_at":"2026-02-10T14:01:40.000Z","published_at":"2022-01-07T13:13:00.000Z","restored_at":null,"restored_by":null,"spam":false,"simulink":false,"admin_reviewed":false,"description_opc":"{\"parts\":[{\"partUri\":\"/matlab/document.xml\",\"contentType\":\"application/vnd.mathworks.matlab.code.document+xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\"?\u003e\u003cw:document xmlns:w=\\\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\\\"\u003e\u003cw:body\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eWhat is the total resistance of a number of resistors in parallel?\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eA vector R contains the resistances (in Ohm) of \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:rPr\u003e\u003cw:i/\u003e\u003c/w:rPr\u003e\u003cw:t\u003en\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e resistors, which are connected in parallel:\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:customXml w:element=\\\"image\\\"\u003e\u003cw:customXmlPr\u003e\u003cw:attr w:name=\\\"height\\\" w:val=\\\"142\\\"/\u003e\u003cw:attr w:name=\\\"width\\\" w:val=\\\"284\\\"/\u003e\u003cw:attr w:name=\\\"verticalAlign\\\" w:val=\\\"baseline\\\"/\u003e\u003cw:attr w:name=\\\"altText\\\" w:val=\\\"\\\"/\u003e\u003cw:attr w:name=\\\"relationshipId\\\" w:val=\\\"rId1\\\"/\u003e\u003c/w:customXmlPr\u003e\u003c/w:customXml\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eYour function should take the vector R as its input and return the total resistance (in Ohm) of the parallel resistors.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eHint: see \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:hyperlink 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4;\r\nassert(isequal(Resistance(V,I),y_correct))","published":true,"deleted":false,"likes_count":0,"comments_count":0,"created_by":293792,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":97,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2019-03-07T08:43:11.000Z","updated_at":"2026-02-09T15:00:57.000Z","published_at":"2019-03-07T08:43:11.000Z","restored_at":null,"restored_by":null,"spam":false,"simulink":false,"admin_reviewed":false,"description_opc":"{\"relationships\":[{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/document\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"relationshipId\":\"rId2\",\"target\":\"/matlab/output.xml\"}],\"parts\":[{\"partUri\":\"/matlab/document.xml\",\"relationship\":[],\"contentType\":\"application/vnd.mathworks.matlab.code.document+xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\"?\u003e\u003cw:document xmlns:w=\\\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\\\"\u003e\u003cw:body\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eIn this problem, you have to calculate Resistance R of a linear conductor having voltage V across it and current I is passing in it.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003c/w:body\u003e\u003c/w:document\u003e\"},{\"partUri\":\"/matlab/output.xml\",\"contentType\":\"text/xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\" standalone=\\\"no\\\" ?\u003e\u003cembeddedOutputs\u003e\u003cmetaData\u003e\u003cevaluationState\u003emanual\u003c/evaluationState\u003e\u003clayoutState\u003ecode\u003c/layoutState\u003e\u003coutputStatus\u003eready\u003c/outputStatus\u003e\u003c/metaData\u003e\u003coutputArray type=\\\"array\\\"/\u003e\u003cregionArray 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Each row of the matrix contains the resistances of the resistors in that 'string', and all rows of resistors are connected in parallel. An input matrix may thus be represented as:\r\nR = [120 200 1500 50;\r\n     500 50 NaN NaN;\r\n     3000 NaN NaN NaN;\r\n     460 180 900 NaN]\r\nSince there must be as many columns in the matrix as the maximum number of resistors in any 'string', NaNs are used to 'pad out' any row in which that string has fewer resistors.\r\nThe simple case in the figure above would be represented as:\r\nR = [R1 R2; R3 NaN]\r\nYour function should take the matrix R as its input and return the total resistance (in Ohm) of the network of resistors.\r\nHint: see https://en.wikipedia.org/wiki/Resistor#Series_and_parallel_resistors","description_html":"\u003cdiv style = \"text-align: start; line-height: 20.4333px; min-height: 0px; white-space: normal; color: rgb(0, 0, 0); font-family: Menlo, Monaco, Consolas, monospace; font-style: normal; font-size: 14px; font-weight: 400; text-decoration: rgb(0, 0, 0); white-space: normal; \"\u003e\u003cdiv style=\"block-size: 547.917px; display: block; min-width: 0px; padding-block-start: 0px; padding-top: 0px; perspective-origin: 407px 273.958px; transform-origin: 407px 273.958px; vertical-align: baseline; \"\u003e\u003cdiv style=\"block-size: 21px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 10.5px; text-align: left; transform-origin: 384px 10.5px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 237.658px 7.75px; transform-origin: 237.658px 7.75px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eWhat is the total resistance of a network of resistors in series and in parallel?\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003cdiv style=\"block-size: 21px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 10.5px; text-align: left; transform-origin: 384px 10.5px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 318.567px 7.75px; transform-origin: 318.567px 7.75px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eA matrix R contains the resistances (in Ohm) of resistors, which are connected in series and in parallel:\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003cdiv style=\"block-size: 150.75px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 75.375px; text-align: left; transform-origin: 384px 75.375px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cimg class=\"imageNode\" style=\"vertical-align: baseline;width: 222px;height: 145px\" src=\"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAbwAAAEhCAMAAAAzluVwAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAJzUExURf///4yMjEJCQk5OTmNjYwAAAA8PD8/Pz1RUVNPT07a2tru7u/b29u3t7fv7+/Dw8Kqqqq6urn5+fsPDwx8fHyMjI/7+/sLCwoWFhePj45SUlF9fX2JiYpeXl/r6+tTU1KioqICAgPLy8rKysnx8fFpaWgsLC21tbf39/QQEBMDAwJ+fn5GRkWFhYQwMDKamprm5uVhYWAUFBXV1ddzc3Le3t/z8/JWVlVBQUFtbWwICAiQkJFNTU+vr64mJienp6b29vWpqagYGBmhoaM7OzhERERISEkxMTObm5hYWFvn5+dnZ2SAgIGVlZX9/fwcHBwgICNjY2AMDA6KioqOjoyoqKnZ2dn19faurqwEBAUNDQ1ZWVqGhobGxsUtLSw0NDTU1NYKCgvHx8e7u7tXV1VdXV11dXSIiIuXl5e/v7xUVFWZmZkhISMzMzBQUFI+Pj9ra2vj4+KSkpBwcHJiYmMXFxcbGxiYmJjExMS4uLvT09MTExIuLi7q6ukFBQeLi4uHh4SkpKcrKyuTk5E9PTzY2Nr+/vxcXF56enoGBgcjIyPPz80dHR+zs7ISEhHt7e29vb3FxcYeHh6ysrBgYGDs7O/X19aenpzo6Omtra0VFRXR0dDw8PDIyMjMzMxsbG2BgYHl5eZKSkjc3N42NjSEhIdfX19vb22lpaVlZWVxcXL6+vhMTE4qKitLS0oaGhh0dHS8vL0pKSrCwsLS0tCcnJysrK83NzQoKCpOTk8nJyZmZmR4eHoODg2dnZ9/f3/f397W1tYiIiG5ubujo6GRkZKmpqQ4ODiUlJeDg4MvLy62tra+vrwkJCZ2dnY6OjmxsbFMSZGYAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAnMSURBVHhe7d37fxTVGcfxk9gnEpKgIsYILaApMZuCRS4JRkCNoEnEJoQirLXFKlRuQWNBEbxVidpG7M3S2tLallrbam1Lrdqrrb1gL9r+ST1n5kl2diazDOs5s/NMvu9f9pnZ7Mx5zeeV7G4SggIAAAAAAAAAAAAAAAAQrq6+/jweQZoPETXwOOn8WbNmNfIMWTZNvNlE1MQzZBniZVNzy5Q5vCsqHO+ClpYLdbyLWlou4D1QC3N1BHYx74oKx5vHjyC6pJV3QQ0gnmCIJ9ilbVMu411R4Xjz29oW6HIfbmv7CO+BzArH0/BqUwrEEwzxBJsm3sKKbwwhO6aJB1IgnmCIJxjiCYZ4giGeYIgny6LFixdPvY9DPFkuJ6IreEY8YRBPMMQTDPEEQzzBEE8wxBMM8QRDvIhF7ZlS99EwvqO9fUkoXgfvb2+fzx9aciHfkxG8aOuu1JdEjmA8QTp51bYhXgoQz0C8MjpeoSs7PrY0jO/o6lqmr0Iw3lW8v6vr4/yhJcv5ngy42m28FTxmnNBXmysRT0O8CMRzDPEMxItAPMcQz0C8CMRzDPEMxItAPMcQz1i1evXqbp4RzyMnXhnEMxDPMcSLQDwD8RxDvAjEMxDPMcSLQDwD8RxDvAjEMxDPMcSLQDwD8RxDvAjEMxDPMcSLQDwD8RxDvAjEMxDPMcSLQDxDaLyeNWuu4THjEE8wxBMM8QRDPMEQTzDEEwzxBEM8wRBPMMQTDPEEQzzBEE8wxBMM8QRDPMEQTzDEEwzxBEM8wRBPMMQTDPEEQzzBxMfT65/U23Dt2p51vD81fHIj7QXkKZ6nY30r35MSPu+UFBeQh3iTF2vhddff0Ed0I2+mRC+Ap9QXkKd4xoaNRLN5TkcgnrHhpvQWkLd4qofoZh7TEYrnLSClL5y5i9dPNMBjOsLxzAIQL5lwvEGiPh7TEY5nFoB4yYTj3UK0icd0hOOZBSBeMuF4c4lu5TEd4Xif0AtAvGRC8ZqGaHgzz+kIxWsaTm8BeYrXva5pWS+NbOHNlATi8QI+yZvO5SFema1dfEda+LxTUlxAzuLd1pXS000Jn5mluoAcfdlsnke0zR/TpBfAU+oLyNNz3nb9DivdFytGKZ7aXkx3AXmKp+qJ6nlMTyCeul0vAF82kwvGaywQBV5rLvpUsexVvBvBeGYBd/Cs1Kc/M1DYcedn7+JN+3IVz5xx4G6ed+7qDV5XZ8pOElhA9+f0PcY9u/0d9uUr3p69RPt4c4T2j6b9maf2HNAL8Md7aajtvrH++z9PC/wd9uUrnjpIVDzkj/X6NvV43gIe8KYHyX+z/gAd8G4dyFm8zsNED83hjVrEKy1gtH2ht+cIDXu3DuQsnjqqtx/muRbx1NFicAHaI/QoT9blLZ5aQtTxGM+1iKeu0Qt4nGftri+MPMGjdbmL92QH0bHJPbWI5y2AZ6X6x+kgj/aJj1dRGvEqeurpoWd4dADxHOr84si8L/HsAuK5M/EsnTf5LQMnEM+Z4+PF58qejq1DPFcGx4sOn+48iOfKl+krbj/v8hxPv1lmvCNlw3x27SneZRviucInNxAPIhBPMAnxRpdZ91U+dDKr+VEWfY0P/YFIiPd1vUbLnudDJ7O+9Pxpyzf40B8I4iWAeNUz8YoW6cOdezx+rBUzLV4jzzbsqybeCZ5teBTxqoZ4CSBeDMSrHuIlgHgxEK96iJcA4sVAvOohXgKIFyMv8VrjDI5N+ab9eE/zoY1uPmNIYAFt9uN9iw9tdPIZI/jDY9U43ip9+kQsxzt3luMl8sJZ8iFeQogXgXiVCIj37e9M5+R3p9yjP8hyvBV8aGMXnzHke3y39qJegOV4V/Ghje/zGcuNiIjXw3OsmflqcwjxpoN4CSBeDMSrHuIlgHgxEK96iJcA4sVAvOohXgKIF2OmxfvBD+05VU28H/GDbXhphsWz7NzjWYZ41UO8s0G8eDMm3sSPrXuZD51MCz/KosAfuIqRk3gzE+IJhniCIZ5giCcY4gmGeIIhnmCIJ1j2472sT7+UZyij4/0ky/GOrxzQp+/76SLehknN67fqK7PiZ5WvTC3jvfKqPrkx8nPeA77XzC+Je1fmF5U++WoY75D+wjDJyp/iyo3NG/myaNsq1KtdvBO/9Ffn6R3lvaBU56/4qhjFCn+ss3bx7i37Idlp3gtKmX9MWlLhJ3+O4xVeifWgvzZW2MMPAnWar4mvuJgvWNTV+m6H8ZK7mB8Eai9fkkQyEe/X/CAw7/CSy0Q8/i8LQakDfEkScRVv5+uV/IbP7utz99/iivMsXxP2DF+w6fFjUtZT9mpzDe8Fpe7na+I7xXszZewSXp1ReI33glLdb/BV8TzCe7Plzbd4edpveR8YjTv4smgrz/LN6Vr5nfkrC8bQ73kP+Eb/wFemd25G2yk18cdNeoFv/elt3oZJE5e/pK/MyNo3eTuTzA9j5/MMZfqIbszsp50HP0mPleAn6TWGeLEQTzDEEwzxBEM8wRBPMMQTDPEEQzzfZY9b92c+tDuI5wv8GqQtf+FDu4N4PsRzAvFiIZ5Pxzv1jj0vIJ4ntXh/5dGGJ4qIZyBeLMTzIZ4TiBcL8XyI5wTixUI8H+I5gXixEM+HeE6YeKfnurDgZEnBfrytfGhtP5/RsgT/f16NmXipsB0vFYjnQzz7EK+SjMdrPeJKy+6SBvvxtvChtb/xGe0b5BPOaCJfbYIP8QRDPMEQTzDEEwzxBEM8wRBPMMQTTMcrDtvTR4iXHh3PNsRLC+IJ9vdd1p3PhwYAAAAAAAAAABCtyN+t1Hobrl3bs473gwCBeJ6O9dn+PWUI0PF4Uguvu/4G80fVeRMyLxDP2LCRaDbPkHWheKqH6GYeIevC8fqJBniErAvHGyTq4xGyLhzvFqJNPELWhePNJbqVR8i6ULymIRrezDNkXSBe97qmZb00soU3IfN0vDJbu/gOyL7yeLd14ZtjgpS+bDZvItrGM4gQeM7brt/i4cWKJIF4qp6onkeQIBivsUA0+Vqz9R/79xbO3PncFbwNGRSMp64kGrjbm7pn8UuYd/u9bciisnh7DhDt815v1tGOpf8c233H87TAuweyqCyeOkhUPGSGd+kib8dyetW7hSwqj9d5mOihOXrY2dXt7ThCZ7xbyKLyeOqofpp7mGdjOd3OE2RPKJ5aQtTxGM+Dq+o6Gv7FG5A94XhPdhAd80f9Sdiw5D5/BmF0vMJJ/OtzocZWLT1T/DdvgDiX0mGeQIz/zG/2bifoPe8WBBmn973b1+lF7xYE+S+9V/f22O7399L/eA+IMeeY+a609sZx3gNytG6pv2nkzPg7J3gbAAAAAAAAAABAKfV/zw7Hw2SqQeUAAAAASUVORK5CYII=\" data-image-state=\"image-loaded\" width=\"222\" height=\"145\"\u003e\u003c/div\u003e\u003cdiv style=\"block-size: 63px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 31.5px; text-align: left; transform-origin: 384px 31.5px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 373.733px 7.75px; transform-origin: 373.733px 7.75px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eThe network consists of one or more 'strings' of resistors in series, each of which is connected in parallel with the others. Each row of the matrix contains the resistances of the resistors in that 'string', and all rows of resistors are connected in parallel. An input matrix may thus be represented as:\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003cdiv style=\"background-color: rgb(247, 247, 247); block-size: 81.7333px; border-bottom-left-radius: 4px; border-bottom-right-radius: 4px; border-end-end-radius: 4px; border-end-start-radius: 4px; border-start-end-radius: 4px; border-start-start-radius: 4px; border-top-left-radius: 4px; border-top-right-radius: 4px; margin-block-end: 10px; margin-block-start: 10px; margin-bottom: 10px; margin-inline-end: 3px; margin-inline-start: 3px; margin-left: 3px; margin-right: 3px; margin-top: 10px; perspective-origin: 404px 40.8667px; transform-origin: 404px 40.8667px; margin-left: 3px; margin-top: 10px; margin-bottom: 10px; margin-right: 3px; \"\u003e\u003cdiv style=\"background-color: rgba(0, 0, 0, 0); block-size: 20.4333px; border-bottom-left-radius: 0px; border-bottom-right-radius: 0px; border-end-end-radius: 0px; border-end-start-radius: 0px; border-inline-end-color: rgb(233, 233, 233); border-inline-end-style: solid; border-inline-end-width: 1px; border-inline-start-color: rgb(233, 233, 233); border-inline-start-style: solid; border-inline-start-width: 1px; border-left-color: rgb(233, 233, 233); border-left-style: solid; border-left-width: 1px; border-right-color: rgb(233, 233, 233); border-right-style: solid; border-right-width: 1px; border-start-end-radius: 0px; border-start-start-radius: 0px; border-top-left-radius: 0px; border-top-right-radius: 0px; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; min-block-size: 18px; min-height: 18px; padding-inline-start: 4px; padding-left: 4px; perspective-origin: 404px 10.2167px; transform-origin: 404px 10.2167px; white-space: nowrap; \"\u003e\u003cspan style=\"block-size: auto; border-inline-end-color: rgb(0, 0, 0); border-inline-end-style: none; border-inline-end-width: 0px; border-inline-start-color: rgb(0, 0, 0); border-inline-start-style: none; border-inline-start-width: 0px; border-left-color: rgb(0, 0, 0); border-left-style: none; border-left-width: 0px; border-right-color: rgb(0, 0, 0); border-right-style: none; border-right-width: 0px; display: inline; margin-inline-end: 45px; margin-right: 45px; min-block-size: 0px; min-height: 0px; padding-inline-start: 0px; padding-left: 0px; perspective-origin: 80.85px 8.25px; tab-size: 4; transform-origin: 80.85px 8.25px; unicode-bidi: normal; white-space: pre; margin-right: 45px; \"\u003e\u003cspan style=\"margin-inline-end: 0px; margin-right: 0px; \"\u003eR = [120 200 1500 50;\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003cdiv style=\"background-color: rgba(0, 0, 0, 0); block-size: 20.4333px; border-bottom-left-radius: 0px; border-bottom-right-radius: 0px; border-end-end-radius: 0px; border-end-start-radius: 0px; border-inline-end-color: rgb(233, 233, 233); border-inline-end-style: solid; border-inline-end-width: 1px; border-inline-start-color: rgb(233, 233, 233); border-inline-start-style: solid; border-inline-start-width: 1px; border-left-color: rgb(233, 233, 233); border-left-style: solid; border-left-width: 1px; border-right-color: rgb(233, 233, 233); border-right-style: solid; border-right-width: 1px; border-start-end-radius: 0px; border-start-start-radius: 0px; border-top-left-radius: 0px; border-top-right-radius: 0px; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; min-block-size: 18px; min-height: 18px; padding-inline-start: 4px; padding-left: 4px; perspective-origin: 404px 10.2167px; transform-origin: 404px 10.2167px; white-space: nowrap; \"\u003e\u003cspan style=\"block-size: auto; border-inline-end-color: rgb(0, 0, 0); border-inline-end-style: none; border-inline-end-width: 0px; border-inline-start-color: rgb(0, 0, 0); border-inline-start-style: none; border-inline-start-width: 0px; border-left-color: rgb(0, 0, 0); border-left-style: none; border-left-width: 0px; border-right-color: rgb(0, 0, 0); border-right-style: none; border-right-width: 0px; display: inline; margin-inline-end: 45px; margin-right: 45px; min-block-size: 0px; min-height: 0px; padding-inline-start: 0px; padding-left: 0px; perspective-origin: 77px 8.25px; tab-size: 4; transform-origin: 77px 8.25px; unicode-bidi: normal; white-space: pre; margin-right: 45px; \"\u003e\u003cspan style=\"margin-inline-end: 0px; margin-right: 0px; \"\u003e     500 50 NaN NaN;\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003cdiv style=\"background-color: rgba(0, 0, 0, 0); block-size: 20.4333px; border-bottom-left-radius: 0px; border-bottom-right-radius: 0px; border-end-end-radius: 0px; border-end-start-radius: 0px; border-inline-end-color: rgb(233, 233, 233); border-inline-end-style: solid; border-inline-end-width: 1px; border-inline-start-color: rgb(233, 233, 233); border-inline-start-style: solid; border-inline-start-width: 1px; border-left-color: rgb(233, 233, 233); border-left-style: solid; border-left-width: 1px; border-right-color: rgb(233, 233, 233); border-right-style: solid; border-right-width: 1px; border-start-end-radius: 0px; border-start-start-radius: 0px; border-top-left-radius: 0px; border-top-right-radius: 0px; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; min-block-size: 18px; min-height: 18px; padding-inline-start: 4px; padding-left: 4px; perspective-origin: 404px 10.2167px; transform-origin: 404px 10.2167px; white-space: nowrap; \"\u003e\u003cspan style=\"block-size: auto; border-inline-end-color: rgb(0, 0, 0); border-inline-end-style: none; border-inline-end-width: 0px; border-inline-start-color: rgb(0, 0, 0); border-inline-start-style: none; border-inline-start-width: 0px; border-left-color: rgb(0, 0, 0); border-left-style: none; border-left-width: 0px; border-right-color: rgb(0, 0, 0); border-right-style: none; border-right-width: 0px; display: inline; margin-inline-end: 45px; margin-right: 45px; min-block-size: 0px; min-height: 0px; padding-inline-start: 0px; padding-left: 0px; perspective-origin: 84.7px 8.25px; tab-size: 4; transform-origin: 84.7px 8.25px; unicode-bidi: normal; white-space: pre; margin-right: 45px; \"\u003e\u003cspan style=\"margin-inline-end: 0px; margin-right: 0px; \"\u003e     3000 NaN NaN NaN;\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003cdiv style=\"background-color: rgba(0, 0, 0, 0); block-size: 20.4333px; border-bottom-left-radius: 0px; border-bottom-right-radius: 0px; border-end-end-radius: 0px; border-end-start-radius: 0px; border-inline-end-color: rgb(233, 233, 233); border-inline-end-style: solid; border-inline-end-width: 1px; border-inline-start-color: rgb(233, 233, 233); border-inline-start-style: solid; border-inline-start-width: 1px; border-left-color: rgb(233, 233, 233); border-left-style: solid; border-left-width: 1px; border-right-color: rgb(233, 233, 233); border-right-style: solid; border-right-width: 1px; border-start-end-radius: 0px; border-start-start-radius: 0px; border-top-left-radius: 0px; border-top-right-radius: 0px; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; min-block-size: 18px; min-height: 18px; padding-inline-start: 4px; padding-left: 4px; perspective-origin: 404px 10.2167px; transform-origin: 404px 10.2167px; white-space: nowrap; \"\u003e\u003cspan style=\"block-size: auto; border-inline-end-color: rgb(0, 0, 0); border-inline-end-style: none; border-inline-end-width: 0px; border-inline-start-color: rgb(0, 0, 0); border-inline-start-style: none; border-inline-start-width: 0px; border-left-color: rgb(0, 0, 0); border-left-style: none; border-left-width: 0px; border-right-color: rgb(0, 0, 0); border-right-style: none; border-right-width: 0px; display: inline; margin-inline-end: 45px; margin-right: 45px; min-block-size: 0px; min-height: 0px; padding-inline-start: 0px; padding-left: 0px; perspective-origin: 80.85px 8.25px; tab-size: 4; transform-origin: 80.85px 8.25px; unicode-bidi: normal; white-space: pre; margin-right: 45px; \"\u003e\u003cspan style=\"margin-inline-end: 0px; margin-right: 0px; \"\u003e     460 180 900 NaN]\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv style=\"block-size: 42px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 10px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 10px; perspective-origin: 384px 21px; text-align: left; transform-origin: 384px 21px; white-space: pre-wrap; margin-left: 4px; margin-top: 10px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 376.442px 7.75px; transform-origin: 376.442px 7.75px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eSince there must be as many columns in the matrix as the maximum number of resistors in any 'string', NaNs are used to 'pad out' any row in which that string has fewer resistors.\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003cdiv style=\"block-size: 21px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 10.5px; text-align: left; transform-origin: 384px 10.5px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 191px 7.75px; transform-origin: 191px 7.75px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eThe simple case in the figure above would be represented as:\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003cdiv style=\"background-color: rgb(247, 247, 247); block-size: 20.4333px; border-bottom-left-radius: 4px; border-bottom-right-radius: 4px; border-end-end-radius: 4px; border-end-start-radius: 4px; border-start-end-radius: 4px; border-start-start-radius: 4px; border-top-left-radius: 4px; border-top-right-radius: 4px; margin-block-end: 10px; margin-block-start: 10px; margin-bottom: 10px; margin-inline-end: 3px; margin-inline-start: 3px; margin-left: 3px; margin-right: 3px; margin-top: 10px; perspective-origin: 404px 10.2167px; transform-origin: 404px 10.2167px; margin-left: 3px; margin-top: 10px; margin-bottom: 10px; margin-right: 3px; \"\u003e\u003cdiv style=\"background-color: rgba(0, 0, 0, 0); border-bottom-left-radius: 0px; border-bottom-right-radius: 0px; border-end-end-radius: 0px; border-end-start-radius: 0px; border-inline-end-color: rgb(233, 233, 233); border-inline-end-style: solid; border-inline-end-width: 1px; border-inline-start-color: rgb(233, 233, 233); border-inline-start-style: solid; border-inline-start-width: 1px; border-left-color: rgb(233, 233, 233); border-left-style: solid; border-left-width: 1px; border-right-color: rgb(233, 233, 233); border-right-style: solid; border-right-width: 1px; border-start-end-radius: 0px; border-start-start-radius: 0px; border-top-left-radius: 0px; border-top-right-radius: 0px; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; min-block-size: 18px; min-height: 18px; padding-inline-start: 4px; padding-left: 4px; white-space: nowrap; \"\u003e\u003cspan style=\"block-size: auto; border-inline-end-color: rgb(0, 0, 0); border-inline-end-style: none; border-inline-end-width: 0px; border-inline-start-color: rgb(0, 0, 0); border-inline-start-style: none; border-inline-start-width: 0px; border-left-color: rgb(0, 0, 0); border-left-style: none; border-left-width: 0px; border-right-color: rgb(0, 0, 0); border-right-style: none; border-right-width: 0px; display: inline; margin-inline-end: 45px; margin-right: 45px; min-block-size: 0px; min-height: 0px; padding-inline-start: 0px; padding-left: 0px; perspective-origin: 73.15px 8.25px; tab-size: 4; transform-origin: 73.15px 8.25px; unicode-bidi: normal; white-space: pre; margin-right: 45px; \"\u003e\u003cspan style=\"margin-inline-end: 0px; margin-right: 0px; \"\u003eR = [R1 R2; R3 NaN]\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv style=\"block-size: 21px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 10px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 10px; perspective-origin: 384px 10.5px; text-align: left; transform-origin: 384px 10.5px; white-space: pre-wrap; margin-left: 4px; margin-top: 10px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 361.067px 7.75px; transform-origin: 361.067px 7.75px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eYour function should take the matrix R as its input and return the total resistance (in Ohm) of the network of resistors.\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003cdiv style=\"block-size: 21px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 10.5px; text-align: left; transform-origin: 384px 10.5px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 29.5583px 7.75px; transform-origin: 29.5583px 7.75px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eHint: see \u003c/span\u003e\u003c/span\u003e\u003ca target='_blank' href = \"https://en.wikipedia.org/wiki/Resistor#Series_and_parallel_resistors\"\u003e\u003cspan style=\"\"\u003e\u003cspan style=\"\"\u003ehttps://en.wikipedia.org/wiki/Resistor#Series_and_parallel_resistors\u003c/span\u003e\u003c/span\u003e\u003c/a\u003e\u003c/div\u003e\u003c/div\u003e\u003c/div\u003e","function_template":"function totalRes = resistance(R)\r\n  totalRes = R;\r\nend","test_suite":"%%\r\nR = 10;\r\ny_correct = 10;\r\nassert(abs(resistance(R)-y_correct)\u003c0.0001)\r\n\r\n%%\r\nR = ones(10);\r\ny_correct = 1;\r\nassert(abs(resistance(R)-y_correct)\u003c0.0001)\r\n\r\n%%\r\nR = [1000 120 5250 250];\r\ny_correct = 6620;\r\nassert(abs(resistance(R)-y_correct)\u003c0.0001)\r\n\r\n%%\r\nR = [1000 120 5250 250 NaN];\r\ny_correct = 6620;\r\nassert(abs(resistance(R)-y_correct)\u003c0.0001)\r\n\r\n%%\r\nR = [15000 2500 120000; 10 350 1250];\r\ny_correct = 1591.366544461218;\r\nassert(abs(resistance(R)-y_correct)\u003c0.0001)\r\n\r\n%%\r\nR = [120 200 1500 50;\r\n     500 50 NaN NaN;\r\n     3000 NaN NaN NaN;\r\n     460 180 900 NaN];\r\ny_correct = 299.7938774;\r\nassert(abs(resistance(R)-y_correct)\u003c0.0001)\r\n\r\n%%\r\n%Anti-cheating #1\r\nR = randi(2000,[50,50]);\r\nRs = num2str(sum(R,2));\r\ns=0;for ii=1:length(Rs),s=s+str2num(Rs(ii,:)).^-1;end\r\ny_correct = s^-1;\r\nassert(abs(resistance(R)-y_correct)\u003c0.0001)\r\n\r\n%%\r\n%Anti-cheating #2\r\ns=importdata('resistance.m');\r\ny_correct=false;\r\nassert(isequal(sum(contains(s,'regexp')),y_correct),'Regexp not allowed');\r\nassert(isequal(sum(contains(s,'assert')),y_correct),'Assert not allowed');","published":true,"deleted":false,"likes_count":1,"comments_count":0,"created_by":437780,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":27,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2022-01-07T14:02:03.000Z","updated_at":"2026-02-19T15:38:06.000Z","published_at":"2022-01-07T14:34:14.000Z","restored_at":null,"restored_by":null,"spam":false,"simulink":false,"admin_reviewed":false,"description_opc":"{\"parts\":[{\"partUri\":\"/matlab/document.xml\",\"contentType\":\"application/vnd.mathworks.matlab.code.document+xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\"?\u003e\u003cw:document xmlns:w=\\\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\\\"\u003e\u003cw:body\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eWhat is the total resistance of a network of resistors in series and in parallel?\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eA matrix R contains the resistances (in Ohm) of resistors, which are connected in series and in parallel:\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:customXml w:element=\\\"image\\\"\u003e\u003cw:customXmlPr\u003e\u003cw:attr w:name=\\\"height\\\" w:val=\\\"145\\\"/\u003e\u003cw:attr w:name=\\\"width\\\" w:val=\\\"222\\\"/\u003e\u003cw:attr w:name=\\\"verticalAlign\\\" w:val=\\\"baseline\\\"/\u003e\u003cw:attr w:name=\\\"altText\\\" w:val=\\\"\\\"/\u003e\u003cw:attr w:name=\\\"relationshipId\\\" w:val=\\\"rId1\\\"/\u003e\u003c/w:customXmlPr\u003e\u003c/w:customXml\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eThe network consists of one or more 'strings' of resistors in series, each of which is connected in parallel with the others. Each row of the matrix contains the resistances of the resistors in that 'string', and all rows of resistors are connected in parallel. An input matrix may thus be represented as:\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"code\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e\u003c![CDATA[R = [120 200 1500 50;\\n     500 50 NaN NaN;\\n     3000 NaN NaN NaN;\\n     460 180 900 NaN]]]\u003e\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eSince there must be as many columns in the matrix as the maximum number of resistors in any 'string', NaNs are used to 'pad out' any row in which that string has fewer resistors.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eThe simple case in the figure above would be represented as:\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"code\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003e\u003c![CDATA[R = [R1 R2; R3 NaN]]]\u003e\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eYour function should take the matrix R as its input and return the total resistance (in Ohm) of the network of resistors.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eHint: see \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:hyperlink w:docLocation=\\\"https://en.wikipedia.org/wiki/Resistor#Series_and_parallel_resistors\\\"\u003e\u003cw:r\u003e\u003cw:t\u003ehttps://en.wikipedia.org/wiki/Resistor#Series_and_parallel_resistors\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:hyperlink\u003e\u003c/w:p\u003e\u003c/w:body\u003e\u003c/w:document\u003e\",\"relationship\":[{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/image\",\"target\":\"/media/image1.png\",\"relationshipId\":\"rId1\"}]},{\"partUri\":\"/media/image1.png\",\"contentType\":\"image/png\",\"content\":\"data:image/png;base64,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\",\"relationship\":null}],\"relationships\":[{\"relationshipType\":\"http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Resistance of a light bulb","description":"The current through two identical light bulbs connected in series is C Amperes.  The total voltage across both bulbs is V Volts.  Find the resistance R in a single light bulb.\r\n","description_html":"\u003cdiv style = \"text-align: start; line-height: 20.44px; min-height: 0px; white-space: normal; color: rgb(0, 0, 0); font-family: Menlo, Monaco, Consolas, monospace; font-style: normal; font-size: 14px; font-weight: 400; text-decoration: none solid rgb(0, 0, 0); white-space: normal; \"\u003e\u003cdiv style=\"block-size: 157px; display: block; min-width: 0px; padding-block-start: 0px; padding-top: 0px; perspective-origin: 407px 78.5px; transform-origin: 407px 78.5px; vertical-align: baseline; \"\u003e\u003cdiv style=\"block-size: 42px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 21px; text-align: left; transform-origin: 384px 21px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 0px 0px; transform-origin: 0px 0px; \"\u003e\u003cspan style=\"\"\u003eThe current through two identical light bulbs connected in series is C Amperes.\u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 0px 0px; transform-origin: 0px 0px; \"\u003e\u003cspan style=\"\"\u003e  \u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 0px 0px; transform-origin: 0px 0px; \"\u003e\u003cspan style=\"\"\u003eThe total voltage across both bulbs is V Volts.\u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 0px 0px; transform-origin: 0px 0px; \"\u003e\u003cspan style=\"\"\u003e  \u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 0px 0px; transform-origin: 0px 0px; \"\u003e\u003cspan style=\"\"\u003eFind the resistance R in a single light bulb.\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003cdiv style=\"block-size: 106px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 53px; text-align: left; transform-origin: 384px 53px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cimg class=\"imageNode\" style=\"vertical-align: baseline\" 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data-image-state=\"image-loaded\"\u003e\u003c/div\u003e\u003c/div\u003e\u003c/div\u003e","function_template":"function R = findRes(C,V) % Do not edit this line.\r\n  % insert your code here\r\n  \r\nend % Do not edit this line.\r\n","test_suite":"%%\r\nassert(isequal(findRes (0.25,110),220));\r\n%%\r\nassert(isequal(findRes(0.2,20),50));","published":true,"deleted":false,"likes_count":6,"comments_count":3,"created_by":542228,"edited_by":542228,"edited_at":"2022-09-08T18:46:47.000Z","deleted_by":null,"deleted_at":null,"solvers_count":930,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2022-08-31T14:38:51.000Z","updated_at":"2026-04-16T20:33:21.000Z","published_at":"2022-08-31T14:38:51.000Z","restored_at":null,"restored_by":null,"spam":false,"simulink":false,"admin_reviewed":false,"description_opc":"{\"parts\":[{\"partUri\":\"/matlab/document.xml\",\"contentType\":\"application/vnd.mathworks.matlab.code.document+xml\",\"content\":\"\u003c?xml 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Parallel Resistance","description":"Three resistors connected in parallel have resistances R1, R 2, and R 3, respectively.  Return the total resistance R total  of the three resistors together to two decimal places?\r\n","description_html":"\u003cdiv style = \"text-align: start; line-height: 20.4333px; min-height: 0px; white-space: normal; color: rgb(0, 0, 0); font-family: Menlo, Monaco, Consolas, monospace; font-style: normal; font-size: 14px; font-weight: 400; text-decoration: rgb(0, 0, 0); white-space: normal; \"\u003e\u003cdiv style=\"block-size: 144.5px; display: block; min-width: 0px; padding-block-start: 0px; padding-top: 0px; perspective-origin: 407px 72.25px; transform-origin: 407px 72.25px; vertical-align: baseline; \"\u003e\u003cdiv style=\"block-size: 42px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 21px; text-align: left; transform-origin: 384px 21px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 178px 8px; transform-origin: 178px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eThree resistors connected in parallel have resistances R\u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 4px 8px; transform-origin: 4px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"font-style: italic; \"\u003e1\u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 4px 8px; transform-origin: 4px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"font-style: italic; \"\u003e, \u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 5px 8px; transform-origin: 5px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eR\u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 6px 8px; transform-origin: 6px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"font-style: italic; \"\u003e 2\u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 4px 8px; transform-origin: 4px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"font-style: italic; \"\u003e, \u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 19px 8px; transform-origin: 19px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eand R\u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 6px 8px; transform-origin: 6px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"font-style: italic; \"\u003e 3\u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 4px 8px; transform-origin: 4px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"font-style: italic; \"\u003e, \u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 39px 8px; transform-origin: 39px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003erespectively.\u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 4px 8px; transform-origin: 4px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003e  \u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 92.5px 8px; transform-origin: 92.5px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eReturn the total resistance R \u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 13.5px 8px; transform-origin: 13.5px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"font-style: italic; \"\u003etotal\u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 4px 8px; transform-origin: 4px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003e  \u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 167px 8px; transform-origin: 167px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eof the three resistors together to two decimal places?\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003cdiv style=\"block-size: 93.5px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 46.75px; text-align: left; transform-origin: 384px 46.75px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cimg class=\"imageNode\" style=\"vertical-align: baseline\" 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data-image-state=\"image-loaded\"\u003e\u003c/div\u003e\u003c/div\u003e\u003c/div\u003e","function_template":"function Rtotal = findTotalRes(R1,R2,R3) % Do not edit this line.\r\n  % insert your code here\r\n  \r\nend % Do not edit this line.\r\n","test_suite":"%%\r\nassert(isequal(findTotalRes(100,200,300),54.55));\r\n%%\r\nassert(isequal(findTotalRes(20,40,60),10.91));\r\n%%\r\nassert(isequal(findTotalRes(45,45,45),15));\r\n\r\n","published":true,"deleted":false,"likes_count":6,"comments_count":1,"created_by":542228,"edited_by":223089,"edited_at":"2022-10-11T07:58:18.000Z","deleted_by":null,"deleted_at":null,"solvers_count":896,"test_suite_updated_at":"2022-10-11T07:58:18.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2022-08-31T15:14:42.000Z","updated_at":"2026-04-16T20:34:26.000Z","published_at":"2022-08-31T15:14:42.000Z","restored_at":null,"restored_by":null,"spam":false,"simulink":false,"admin_reviewed":false,"description_opc":"{\"parts\":[{\"partUri\":\"/matlab/document.xml\",\"contentType\":\"application/vnd.mathworks.matlab.code.document+xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\"?\u003e\u003cw:document 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R\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:rPr\u003e\u003cw:i/\u003e\u003c/w:rPr\u003e\u003cw:t\u003e 3\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:rPr\u003e\u003cw:i/\u003e\u003c/w:rPr\u003e\u003cw:t\u003e, \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003erespectively.\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e  \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003eReturn the total resistance R \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:rPr\u003e\u003cw:i/\u003e\u003c/w:rPr\u003e\u003cw:t\u003etotal\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e  \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003eof the three resistors together to two decimal places?\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:customXml 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Current through resistor","description":"Three resistors (R2, R3, R4) are connected in parallel as shown in the figure.  If this combination is connected in series with a battery V (volts) and a resistor R1 (ohms).  Find the current I (in amps) through the R4 resistor? Round to the nearest 100th.\r\n","description_html":"\u003cdiv style = \"text-align: start; line-height: 20.4333px; min-height: 0px; white-space: normal; color: rgb(0, 0, 0); font-family: Menlo, Monaco, Consolas, monospace; font-style: normal; font-size: 14px; font-weight: 400; text-decoration: rgb(0, 0, 0); white-space: normal; \"\u003e\u003cdiv style=\"block-size: 154.5px; display: block; min-width: 0px; padding-block-start: 0px; padding-top: 0px; perspective-origin: 407px 77.25px; transform-origin: 407px 77.25px; vertical-align: baseline; \"\u003e\u003cdiv style=\"block-size: 63px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; margin-inline-end: 10px; margin-inline-start: 4px; margin-left: 4px; margin-right: 10px; margin-top: 2px; perspective-origin: 384px 31.5px; text-align: left; transform-origin: 384px 31.5px; white-space: pre-wrap; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; \"\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 243px 8px; transform-origin: 243px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eThree resistors (R2, R3, R4) are connected in parallel as shown in the figure.\u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 4px 8px; transform-origin: 4px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003e  \u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 129px 8px; transform-origin: 129px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eIf this combination is connected in series with a battery V (volts) and a resistor R1 (ohms).\u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 4px 8px; transform-origin: 4px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003e  \u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 209.5px 8px; transform-origin: 209.5px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eFind the current I (in amps) through the R4 resistor? Round to the nearest 100\u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 6px 8px; transform-origin: 6px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003eth\u003c/span\u003e\u003c/span\u003e\u003cspan style=\"block-size: auto; display: inline; margin-block-end: 0px; margin-block-start: 0px; margin-bottom: 0px; margin-inline-end: 0px; margin-inline-start: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 2px 8px; transform-origin: 2px 8px; unicode-bidi: normal; \"\u003e\u003cspan style=\"\"\u003e.\u003c/span\u003e\u003c/span\u003e\u003c/div\u003e\u003cdiv style=\"block-size: 82.5px; font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-block-end: 9px; margin-block-start: 2px; margin-bottom: 9px; 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data-image-state=\"image-loaded\"\u003e\u003c/div\u003e\u003c/div\u003e\u003c/div\u003e","function_template":"function I = findCurrent(V,R1,R2,R3,R4) % Do not edit this line.\r\n  % insert your code here\r\nend % Do not edit this line.\r\n\r\n","test_suite":"%%\r\nassert(isequal(findCurrent(12,2,4,6,10),0.59));\r\n\r\n%%\r\nassert(isequal(findCurrent(20,0,8,8,4),5));\r\n\r\n%%\r\nassert(isequal(findCurrent(72,7,3,3,3),3));","published":true,"deleted":false,"likes_count":8,"comments_count":1,"created_by":542228,"edited_by":223089,"edited_at":"2022-10-06T07:24:28.000Z","deleted_by":null,"deleted_at":null,"solvers_count":557,"test_suite_updated_at":"2022-10-06T07:24:28.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2022-09-02T16:06:11.000Z","updated_at":"2026-04-16T00:41:11.000Z","published_at":"2022-09-02T16:06:11.000Z","restored_at":null,"restored_by":null,"spam":false,"simulink":false,"admin_reviewed":false,"description_opc":"{\"parts\":[{\"partUri\":\"/matlab/document.xml\",\"contentType\":\"application/vnd.mathworks.matlab.code.document+xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\"?\u003e\u003cw:document xmlns:w=\\\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\\\"\u003e\u003cw:body\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eThree resistors (R2, R3, R4) are connected in parallel as shown in the figure.\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e  \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003eIf this combination is connected in series with a battery V (volts) and a resistor R1 (ohms).\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e  \u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003eFind the current I (in amps) through the R4 resistor? Round to the nearest 100\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003eth\u003c/w:t\u003e\u003c/w:r\u003e\u003cw:r\u003e\u003cw:t\u003e.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:customXml w:element=\\\"image\\\"\u003e\u003cw:customXmlPr\u003e\u003cw:attr w:name=\\\"height\\\" w:val=\\\"77\\\"/\u003e\u003cw:attr w:name=\\\"width\\\" w:val=\\\"272\\\"/\u003e\u003cw:attr w:name=\\\"verticalAlign\\\" w:val=\\\"baseline\\\"/\u003e\u003cw:attr w:name=\\\"altText\\\" w:val=\\\"\\\"/\u003e\u003cw:attr w:name=\\\"relationshipId\\\" 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