{"group":{"id":1,"name":"Community","lockable":false,"created_at":"2012-01-18T18:02:15.000Z","updated_at":"2026-05-26T00:16:20.000Z","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":"2026-05-26T00:00:00.000Z","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":1726,"title":"Ohm's Law","description":"Well its Ohm's law...\r\n\r\nSo V = IR!\r\n\r\nI will give two of the three values, such as V and I or I and R and you have to return the missing value.  For example:\r\n\r\n  V = 6\r\n  R = 3\r\n\r\nso then:\r\n\r\n  I = 2\r\n\r\nOr:\r\n\r\n  I = 2\r\n  R = 2\r\n\r\nso then:\r\n\r\n  V = 4\r\n\r\nHave fun!","description_html":"\u003cp\u003eWell its Ohm's law...\u003c/p\u003e\u003cp\u003eSo V = IR!\u003c/p\u003e\u003cp\u003eI will give two of the three values, such as V and I or I and R and you have to return the missing value.  For example:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003eV = 6\r\nR = 3\r\n\u003c/pre\u003e\u003cp\u003eso then:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003eI = 2\r\n\u003c/pre\u003e\u003cp\u003eOr:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003eI = 2\r\nR = 2\r\n\u003c/pre\u003e\u003cp\u003eso then:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003eV = 4\r\n\u003c/pre\u003e\u003cp\u003eHave fun!\u003c/p\u003e","function_template":"function V = OhmsLaw(V,I,R)\r\n  V = IR;\r\nend","test_suite":"%%\r\nV = 6;\r\nR = 3;\r\nI = [];\r\nout = 2;\r\nassert(isequal(OhmsLaw(V,I,R),out))\r\n%%\r\nV = [];\r\nR = 3;\r\nI = 4;\r\nout = 12;\r\nassert(isequal(OhmsLaw(V,I,R),out))\r\n%%\r\nV = 22;\r\nR = 100;\r\nI = [];\r\nout = 0.2200;\r\nassert(isequal(OhmsLaw(V,I,R),out))\r\n%%\r\nV = 120;\r\nR = 1.5;\r\nI = [];\r\nout = 80;\r\nassert(isequal(OhmsLaw(V,I,R),out))\r\n%%\r\nV = 100000;\r\nR = [];\r\nI = 0.0005;\r\nout = 200000000;\r\nassert(isequal(OhmsLaw(V,I,R),out))\r\n","published":true,"deleted":false,"likes_count":2,"comments_count":0,"created_by":15013,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":120,"test_suite_updated_at":"2013-07-18T15:06:38.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2013-07-18T14:49:01.000Z","updated_at":"2026-04-27T23:03:15.000Z","published_at":"2013-07-18T15:06:38.000Z","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\",\"targetMode\":\"\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"targetMode\":\"\",\"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\\n\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\u003eWell its Ohm's law...\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eSo V = IR!\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eI will give two of the three values, such as V and I or I and R and you have to return the missing value. For example:\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[V = 6\\nR = 3]]\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\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eso then:\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[I = 2]]\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\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eOr:\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[I = 2\\nR = 2]]\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\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eso then:\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[V = 4]]\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\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eHave fun!\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 type=\\\"array\\\"/\u003e\u003c/embeddedOutputs\u003e\"}]}"}],"problem_search":{"problems":[{"id":1726,"title":"Ohm's Law","description":"Well its Ohm's law...\r\n\r\nSo V = IR!\r\n\r\nI will give two of the three values, such as V and I or I and R and you have to return the missing value.  For example:\r\n\r\n  V = 6\r\n  R = 3\r\n\r\nso then:\r\n\r\n  I = 2\r\n\r\nOr:\r\n\r\n  I = 2\r\n  R = 2\r\n\r\nso then:\r\n\r\n  V = 4\r\n\r\nHave fun!","description_html":"\u003cp\u003eWell its Ohm's law...\u003c/p\u003e\u003cp\u003eSo V = IR!\u003c/p\u003e\u003cp\u003eI will give two of the three values, such as V and I or I and R and you have to return the missing value.  For example:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003eV = 6\r\nR = 3\r\n\u003c/pre\u003e\u003cp\u003eso then:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003eI = 2\r\n\u003c/pre\u003e\u003cp\u003eOr:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003eI = 2\r\nR = 2\r\n\u003c/pre\u003e\u003cp\u003eso then:\u003c/p\u003e\u003cpre class=\"language-matlab\"\u003eV = 4\r\n\u003c/pre\u003e\u003cp\u003eHave fun!\u003c/p\u003e","function_template":"function V = OhmsLaw(V,I,R)\r\n  V = IR;\r\nend","test_suite":"%%\r\nV = 6;\r\nR = 3;\r\nI = [];\r\nout = 2;\r\nassert(isequal(OhmsLaw(V,I,R),out))\r\n%%\r\nV = [];\r\nR = 3;\r\nI = 4;\r\nout = 12;\r\nassert(isequal(OhmsLaw(V,I,R),out))\r\n%%\r\nV = 22;\r\nR = 100;\r\nI = [];\r\nout = 0.2200;\r\nassert(isequal(OhmsLaw(V,I,R),out))\r\n%%\r\nV = 120;\r\nR = 1.5;\r\nI = [];\r\nout = 80;\r\nassert(isequal(OhmsLaw(V,I,R),out))\r\n%%\r\nV = 100000;\r\nR = [];\r\nI = 0.0005;\r\nout = 200000000;\r\nassert(isequal(OhmsLaw(V,I,R),out))\r\n","published":true,"deleted":false,"likes_count":2,"comments_count":0,"created_by":15013,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":120,"test_suite_updated_at":"2013-07-18T15:06:38.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2013-07-18T14:49:01.000Z","updated_at":"2026-04-27T23:03:15.000Z","published_at":"2013-07-18T15:06:38.000Z","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\",\"targetMode\":\"\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"targetMode\":\"\",\"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\\n\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\u003eWell its Ohm's law...\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eSo V = IR!\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eI will give two of the three values, such as V and I or I and R and you have to return the missing value. For example:\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[V = 6\\nR = 3]]\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\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eso then:\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[I = 2]]\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\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eOr:\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[I = 2\\nR = 2]]\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\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eso then:\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[V = 4]]\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\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eHave fun!\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 type=\\\"array\\\"/\u003e\u003c/embeddedOutputs\u003e\"}]}"}],"errors":[],"facets":[[],[{"value":"easy","count":1,"selected":false}]],"term":"tag:\"empty matrices\"","page":1,"per_page":50,"sort":"map(difficulty_value,0,0,999) asc"}}