{"id":1378,"date":"2018-03-05T11:44:46","date_gmt":"2018-03-05T03:44:46","guid":{"rendered":"https:\/\/gurumuda.net\/physics\/?p=1378"},"modified":"2018-03-05T11:44:46","modified_gmt":"2018-03-05T03:44:46","slug":"electric-voltage-problems-and-solutions","status":"publish","type":"post","link":"https:\/\/gurumuda.net\/physics\/electric-voltage-problems-and-solutions.htm","title":{"rendered":"Electric voltage \u2013 problems and solutions","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p class=\"western\" align=\"justify\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">1. <\/span><\/span><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">Determine the <a href=\"https:\/\/gurumuda.net\/physics\/electric-voltage-problems-and-solutions.htm\" target=\"_blank\" rel=\"noopener\">electric potential<\/a> at a point located at 1 cm from a charge 5.0 <\/span><\/span><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">\u03bc<\/span><\/span><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">C.\u00a0<\/span><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">Coulomb constant (k) = 9 x 10<\/span><\/span><\/span><span style=\"color: #000000\"><sup><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">9<\/span><\/span><\/sup><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\"> Nm<\/span><\/span><\/span><span style=\"color: #000000\"><sup><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">2<\/span><\/span><\/sup><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">C<\/span><\/span><\/span><span style=\"color: #000000\"><sup><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">\u22122<\/span><\/span><\/sup><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">, 1 \u03bcC = 10<\/span><\/span><\/span><span style=\"color: #000000\"><sup><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">\u22126<\/span><\/span><\/sup><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\"> C.<\/span><\/span><\/span><\/p>\n<p class=\"western\" align=\"justify\"><u><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">Known :<\/span><\/span><\/span><\/u><\/p>\n<p class=\"western\" align=\"justify\"><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">The distance from charge <\/span><\/span><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">(r) = 1 cm = 1\/100 m = 0.01 m = 10<\/span><\/span><\/span><span style=\"color: #000000\"><sup><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">-2<\/span><\/span><\/sup><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\"> m<\/span><\/span><\/span><\/p>\n<p class=\"western\" align=\"justify\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">Charge <\/span><\/span><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">(q) = 5.0 <\/span><\/span><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">\u03bc<\/span><\/span><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">C = 5.0 x 10<\/span><\/span><sup><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">-6 <\/span><\/span><\/sup><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">C<\/span><\/span><\/p>\n<p class=\"western\" align=\"justify\"><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">Coulomb constant <\/span><\/span><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">(k) = 9 x 10<\/span><\/span><\/span><span style=\"color: #000000\"><sup><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">9<\/span><\/span><\/sup><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\"> Nm<\/span><\/span><\/span><span style=\"color: #000000\"><sup><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">2<\/span><\/span><\/sup><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">C<\/span><\/span><\/span><span style=\"color: #000000\"><sup><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">\u22122<\/span><\/span><\/sup><\/span><\/p>\n<p class=\"western\" align=\"justify\"><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\"><u>Wanted :<\/u><\/span><\/span><\/span> <span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">Electric potential <\/span><\/span><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">(V)<\/span><\/span><\/span><\/p>\n<p class=\"western\" align=\"justify\"><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\"><u>Solution :<\/u><\/span><\/span><\/span><\/p>\n<p class=\"western\" align=\"justify\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">Electric potential :<\/span><\/span><\/p>\n<p align=\"justify\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-1379\" src=\"https:\/\/gurumuda.net\/physics\/wp-content\/uploads\/2018\/03\/Electric-voltage-\u2013-problems-and-solutions-1.png\" alt=\"Electric voltage \u2013 problems and solutions 1\" width=\"160\" height=\"154\" \/><\/p>\n<p class=\"western\" align=\"justify\"><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">Electric potential is <\/span><\/span><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">4.5 x 10<\/span><\/span><\/span><span style=\"color: #000000\"><sup><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">6 <\/span><\/span><\/sup><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">Volt<\/span><\/span><\/span><\/p>\n<p align=\"justify\"><\/p>\n<p class=\"western\" align=\"justify\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">2. <\/span><\/span><a href=\"https:\/\/gurumuda.net\/physics\/electric-charge.htm\" target=\"_blank\" rel=\"noopener\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">Charge<\/span><\/span><\/a> <span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">Q<\/span><\/span><sub><span style=\"font-family: Times new roman,serif\">1<\/span><\/sub><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\"> = 5.0 <\/span><\/span><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">\u03bc<\/span><\/span><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">C <\/span><\/span><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">and charge <\/span><\/span><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">Q<\/span><\/span><sub><span style=\"font-family: Times new roman,serif\">2<\/span><\/sub><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\"> = 6.0 <\/span><\/span><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">\u03bc<\/span><\/span><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">C. <\/span><\/span><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">Coulomb&#8217;s constant <\/span><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">(k) = 9 x 10<\/span><\/span><\/span><span style=\"color: #000000\"><sup><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">9<\/span><\/span><\/sup><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\"> Nm<\/span><\/span><\/span><span style=\"color: #000000\"><sup><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">2<\/span><\/span><\/sup><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">C<\/span><\/span><\/span><span style=\"color: #000000\"><sup><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">\u22122<\/span><\/span><\/sup><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">, 1 \u03bcC = 10<\/span><\/span><\/span><span style=\"color: #000000\"><sup><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">\u22126<\/span><\/span><\/sup><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\"> C. <\/span><\/span><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">Point A located between the charges<\/span><\/span><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">. <\/span><\/span><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">Determine electric potential at point A.<\/span><\/span><\/span><\/p>\n<p align=\"justify\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-1380\" src=\"https:\/\/gurumuda.net\/physics\/wp-content\/uploads\/2018\/03\/Electric-voltage-\u2013-problems-and-solutions-2.png\" alt=\"Electric voltage \u2013 problems and solutions 2\" width=\"230\" height=\"61\" \/><\/p>\n<p class=\"western\" align=\"justify\"><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\"><u>Known :<\/u><\/span><\/span><\/span><\/p>\n<p class=\"western\" align=\"justify\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">Charge <\/span><\/span><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">Q<\/span><\/span><sub><span style=\"font-family: Times new roman,serif\">1<\/span><\/sub><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\"> = -5.0 <\/span><\/span><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">\u03bc<\/span><\/span><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">C = -5.0 x 10<\/span><\/span><sup><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">-6<\/span><\/span><\/sup><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\"> C<\/span><\/span><\/p>\n<p class=\"western\" align=\"justify\"><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">The <a href=\"https:\/\/gurumuda.net\/physics\/distance-and-displacement-problems-and-solutions.htm\" target=\"_blank\" rel=\"noopener\">distance<\/a> of point A from <\/span><\/span><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">Q<\/span><\/span><\/span><sub><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\">1<\/span><\/span><\/sub><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\"> = 10 cm = 0.1 m = 10<\/span><\/span><\/span><span style=\"color: #000000\"><sup><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">-1 <\/span><\/span><\/sup><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">m<\/span><\/span><\/span><\/p>\n<p class=\"western\" align=\"justify\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">Charge <\/span><\/span><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">Q<\/span><\/span><sub><span style=\"font-family: Times new roman,serif\">2<\/span><\/sub><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\"> = 6.0 <\/span><\/span><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">\u03bc<\/span><\/span><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">C = 6.0 x 10<\/span><\/span><sup><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">-6<\/span><\/span><\/sup><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\"> C<\/span><\/span><\/p>\n<p class=\"western\" align=\"justify\"><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">The distance of point a from <\/span><\/span><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">Q<\/span><\/span><\/span><sub><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\">2<\/span><\/span><\/sub><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\"> = 10 cm = 0.1 m = 10<\/span><\/span><\/span><span style=\"color: #000000\"><sup><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">-1 <\/span><\/span><\/sup><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">m<\/span><\/span><\/span><\/p>\n<p class=\"western\" align=\"justify\"><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">Coulomb&#8217;s constant <\/span><\/span><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">(k) = 9 x 10<\/span><\/span><\/span><span style=\"color: #000000\"><sup><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">9<\/span><\/span><\/sup><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\"> Nm<\/span><\/span><\/span><span style=\"color: #000000\"><sup><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">2<\/span><\/span><\/sup><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">C<\/span><\/span><\/span><span style=\"color: #000000\"><sup><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">\u22122<\/span><\/span><\/sup><\/span><\/p>\n<p class=\"western\" align=\"justify\"><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\"><u>Wanted :<\/u><\/span><\/span><\/span> <span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">Electric potential at point A<\/span><\/span><\/span><\/p>\n<p class=\"western\" align=\"justify\"><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\"><u>Solution :<\/u><\/span><\/span><\/span><\/p>\n<p class=\"western\" align=\"justify\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">Electric potential 1 <\/span><\/span><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">:<\/span><\/span><\/p>\n<p align=\"justify\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-1381\" src=\"https:\/\/gurumuda.net\/physics\/wp-content\/uploads\/2018\/03\/Electric-voltage-\u2013-problems-and-solutions-3.png\" alt=\"Electric voltage \u2013 problems and solutions 3\" width=\"181\" height=\"142\" \/><\/p>\n<p class=\"western\" align=\"justify\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">Electric potential 2 <\/span><\/span><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">:<\/span><\/span><\/p>\n<p align=\"justify\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-1382\" src=\"https:\/\/gurumuda.net\/physics\/wp-content\/uploads\/2018\/03\/Electric-voltage-\u2013-problems-and-solutions-4.png\" alt=\"Electric voltage \u2013 problems and solutions 4\" width=\"166\" height=\"139\" \/><\/p>\n<p class=\"western\" align=\"justify\"><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">Electric potential at point A <\/span><\/span><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">:<\/span><\/span><\/span><\/p>\n<p class=\"western\" align=\"justify\"><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">V = V<\/span><\/span><\/span><sub><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\">2 <\/span><\/span><\/sub><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">\u2013 V<\/span><\/span><\/span><sub><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\">1<\/span><\/span><\/sub><\/p>\n<p class=\"western\" align=\"justify\"><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">V = (54 \u2013 45) x 10<\/span><\/span><\/span><span style=\"color: #000000\"><sup><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">4<\/span><\/span><\/sup><\/span><\/p>\n<p class=\"western\" align=\"justify\"><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">V = 9 x 10<\/span><\/span><\/span><span style=\"color: #000000\"><sup><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">4 <\/span><\/span><\/sup><\/span><\/p>\n<p align=\"justify\"><\/p>\n<p class=\"western\" align=\"justify\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">3. <\/span><\/span><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">Charge <\/span><\/span><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">q<\/span><\/span><sub><span style=\"font-family: Times new roman,serif\">1<\/span><\/sub><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\"> = 5.0 \u03bcC <\/span><\/span><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">and charge <\/span><\/span><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">q<\/span><\/span><sub><span style=\"font-family: Times new roman,serif\">2<\/span><\/sub><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\"> = 6.0 \u03bcC. <\/span><\/span><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">Coulomb&#8217;s constant <\/span><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">(k) = 9 x 10<\/span><\/span><\/span><span style=\"color: #000000\"><sup><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">9<\/span><\/span><\/sup><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\"> Nm<\/span><\/span><\/span><span style=\"color: #000000\"><sup><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">2<\/span><\/span><\/sup><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">C<\/span><\/span><\/span><span style=\"color: #000000\"><sup><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">\u22122<\/span><\/span><\/sup><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">, 1 \u03bcC = 10<\/span><\/span><\/span><span style=\"color: #000000\"><sup><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">\u22126<\/span><\/span><\/sup><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\"> C. <\/span><\/span><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">Determine the electric potential at point A.<\/span><\/span><\/span><\/p>\n<p class=\"western\" align=\"justify\"><u><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright size-full wp-image-1383\" src=\"https:\/\/gurumuda.net\/physics\/wp-content\/uploads\/2018\/03\/Electric-voltage-\u2013-problems-and-solutions-5.png\" alt=\"Electric voltage \u2013 problems and solutions 5\" width=\"193\" height=\"186\" \/>Known :<\/span><\/span><\/span><\/u><\/p>\n<p class=\"western\" align=\"justify\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">Charge <\/span><\/span><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">Q<\/span><\/span><sub><span style=\"font-family: Times new roman,serif\">1<\/span><\/sub><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\"> = -5.0 <\/span><\/span><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">\u03bc<\/span><\/span><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">C = -5.0 x 10<\/span><\/span><sup><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">-6<\/span><\/span><\/sup><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\"> C<\/span><\/span><\/p>\n<p class=\"western\" align=\"justify\"><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">The distance of point A from <\/span><\/span><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">Q<\/span><\/span><\/span><sub><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\">1<\/span><\/span><\/sub><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\"> = 40 cm = 0.4 m = 4 x 10<\/span><\/span><\/span><span style=\"color: #000000\"><sup><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">-1 <\/span><\/span><\/sup><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">m<\/span><\/span><\/span><\/p>\n<p class=\"western\" align=\"justify\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">Charge <\/span><\/span><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">Q<\/span><\/span><sub><span style=\"font-family: Times new roman,serif\">2<\/span><\/sub><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\"> = 6.0 <\/span><\/span><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">\u03bc<\/span><\/span><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">C = 6.0 x 10<\/span><\/span><sup><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">-6<\/span><\/span><\/sup><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\"> C<\/span><\/span><\/p>\n<p class=\"western\" align=\"justify\"><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">The distance of point A from <\/span><\/span><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">Q<\/span><\/span><\/span><sub><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\">2<\/span><\/span><\/sub><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\"> = 50 cm = 0.5 m = 5 x 10<\/span><\/span><\/span><span style=\"color: #000000\"><sup><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">-1 <\/span><\/span><\/sup><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">m<\/span><\/span><\/span><\/p>\n<p class=\"western\" align=\"justify\"><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">Coulomb&#8217;s constant <\/span><\/span><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">(k) = 9 x 10<\/span><\/span><\/span><span style=\"color: #000000\"><sup><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">9<\/span><\/span><\/sup><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\"> Nm<\/span><\/span><\/span><span style=\"color: #000000\"><sup><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">2<\/span><\/span><\/sup><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">C<\/span><\/span><\/span><span style=\"color: #000000\"><sup><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">\u22122<\/span><\/span><\/sup><\/span><\/p>\n<p class=\"western\" align=\"justify\"><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\"><u>Wanted :<\/u><\/span><\/span><\/span> <span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">Electric potential at point <\/span><\/span><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">A<\/span><\/span><\/span><\/p>\n<p class=\"western\" align=\"justify\"><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\"><u>Solution :<\/u><\/span><\/span><\/span><\/p>\n<p class=\"western\" align=\"justify\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">Electric potential 1<\/span><\/span><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\"> :<\/span><\/span><\/p>\n<p align=\"justify\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-1384\" src=\"https:\/\/gurumuda.net\/physics\/wp-content\/uploads\/2018\/03\/Electric-voltage-\u2013-problems-and-solutions-6.png\" alt=\"Electric voltage \u2013 problems and solutions 6\" width=\"169\" height=\"202\" \/><\/p>\n<p class=\"western\" align=\"justify\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">Electric potential 2<\/span><\/span><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\"> :<\/span><\/span><\/p>\n<p align=\"justify\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-1385\" src=\"https:\/\/gurumuda.net\/physics\/wp-content\/uploads\/2018\/03\/Electric-voltage-\u2013-problems-and-solutions-7.png\" alt=\"Electric voltage \u2013 problems and solutions 7\" width=\"163\" height=\"202\" \/><\/p>\n<p class=\"western\" align=\"justify\"><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">Electric potential at point A <\/span><\/span><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">:<\/span><\/span><\/span><\/p>\n<p class=\"western\" align=\"justify\"><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">V = V<\/span><\/span><\/span><sub><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\">1 <\/span><\/span><\/sub><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">+ <\/span><\/span><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">V<\/span><\/span><\/span><sub><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\">2<\/span><\/span><\/sub><\/p>\n<p class=\"western\" align=\"justify\"><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">V = (-11.25 + 10.8) x 10<\/span><\/span><\/span><span style=\"color: #000000\"><sup><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">4<\/span><\/span><\/sup><\/span><\/p>\n<p class=\"western\" align=\"justify\"><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">V = -0.45 x 10<\/span><\/span><\/span><span style=\"color: #000000\"><sup><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">4 <\/span><\/span><\/sup><\/span><\/p>\n<p class=\"western\" align=\"justify\"><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">V = -4.5 x 10<\/span><\/span><\/span><span style=\"color: #000000\"><sup><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">3 <\/span><\/span><\/sup><\/span><\/p>\n<p class=\"western\" align=\"justify\"><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">Electric potential at point A is <\/span><\/span><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">-4.5 x 10<\/span><\/span><\/span><span style=\"color: #000000\"><sup><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">3 <\/span><\/span><\/sup><\/span><span style=\"color: #000000\"><span style=\"font-family: Times new roman,serif\"><span style=\"font-size: medium\">Volt<\/span><\/span><\/span><!--more--><\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>1. Determine the electric potential at a point located at 1 cm from a charge 5.0 \u03bcC.\u00a0Coulomb constant (k) = 9 x 109 Nm2C\u22122, 1 \u03bcC = 10\u22126 C. Known : The distance from charge (r) = 1 cm = 1\/100 m = 0.01 m = 10-2 m Charge (q) = 5.0 \u03bcC = 5.0 &#8230; <a title=\"Electric voltage \u2013 problems and solutions\" class=\"read-more\" href=\"https:\/\/gurumuda.net\/physics\/electric-voltage-problems-and-solutions.htm\" aria-label=\"Read more about Electric voltage \u2013 problems and solutions\">Read more<\/a><\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"","_seopress_redirections_param":"","_seopress_redirections_type":0,"_seopress_analysis_target_kw":"Electric voltage \u2013 problems and solutions","_seopress_news_disabled":"","_seopress_video_disabled":"","_seopress_video":[],"_seopress_pro_schemas_manual":[],"_seopress_pro_rich_snippets_disable_all":"","_seopress_pro_rich_snippets_disable":[],"_seopress_pro_schemas":[],"footnotes":""},"categories":[3],"tags":[],"class_list":["post-1378","post","type-post","status-publish","format-standard","hentry","category-solved-problems-in-basic-physics"],"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/gurumuda.net\/physics\/wp-json\/wp\/v2\/posts\/1378","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gurumuda.net\/physics\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gurumuda.net\/physics\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gurumuda.net\/physics\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gurumuda.net\/physics\/wp-json\/wp\/v2\/comments?post=1378"}],"version-history":[{"count":0,"href":"https:\/\/gurumuda.net\/physics\/wp-json\/wp\/v2\/posts\/1378\/revisions"}],"wp:attachment":[{"href":"https:\/\/gurumuda.net\/physics\/wp-json\/wp\/v2\/media?parent=1378"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gurumuda.net\/physics\/wp-json\/wp\/v2\/categories?post=1378"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gurumuda.net\/physics\/wp-json\/wp\/v2\/tags?post=1378"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}