{"id":2599,"date":"2024-08-24T12:16:53","date_gmt":"2024-08-24T12:16:53","guid":{"rendered":"https:\/\/workhouse.sweetdishy.com\/?p=2599"},"modified":"2024-08-24T12:19:03","modified_gmt":"2024-08-24T12:19:03","slug":"important-terms-relating-to-an-electric-cell","status":"publish","type":"post","link":"https:\/\/workhouse.sweetdishy.com\/index.php\/2024\/08\/24\/important-terms-relating-to-an-electric-cell\/","title":{"rendered":"IMPORTANT TERMS RELATING TO AN ELECTRIC CELL"},"content":{"rendered":"\n<p id=\"para-012\">The following are the important terms related to an electric cell:<\/p>\n\n\n\n<ol class=\"wp-block-list\" id=\"ol-004\">\n<li><strong>Electromotive force (emf) of a cell:<\/strong>&nbsp;The energy supplied by a cell to one coulomb of charge is called emf of a cell. In general, it is defined as a potential difference (p.d.) between the two electrodes (positive and negative) of a cell on open circuit. It is represented by letter \u2018E\u2019.<\/li>\n\n\n\n<li><strong>Internal resistance of a cell:<\/strong>\u00a0The opposition offered to the flow of current by the internal composition of the cell itself is called its internal resistance. It is generally represented by letter \u2018<em>r<\/em>\u2019.\u00a0Figure 4.1(a)\u00a0shows a cell with its internal resistance.<\/li>\n\n\n\n<li><strong>Terminal voltage:<\/strong>&nbsp;The potential difference across the terminals of a cell at load is known as its terminal voltage. It is generally represented by letter \u2018<em>V<\/em>\u2019.<\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/learning.oreilly.com\/api\/v2\/epubs\/urn:orm:book:9789332558311\/files\/images\/page187_1.png\" alt=\"img\"\/><\/figure>\n\n\n\n<p id=\"para-013\"><strong>Fig. 4.1<\/strong>&nbsp;&nbsp;Terminal voltage of a cell of no-lead and at load (a) Cell with internal resistance of no-load (b) Cell at load<\/p>\n\n\n\n<p id=\"para-014\">When load is applied, it delivers current\u00a0<em>I<\/em>\u00a0to the external (load) resistor\u00a0<em>R<\/em>\u00a0as shown in\u00a0Figure 4.1(b). The potential difference across the terminals reduces to\u00a0<em>V<\/em>\u00a0volts because of the voltage drop (<em>I<\/em>\u00a0\u00d7\u00a0<em>r<\/em>) in the internal resistance of the cell.<\/p>\n\n\n\n<p id=\"para-015\">Therefore,<\/p>\n\n\n\n<p id=\"para-016\">&nbsp;<\/p>\n\n\n\n<p><em>V<\/em>&nbsp;=&nbsp;<em>E<\/em>&nbsp;\u2212&nbsp;<em>I<\/em>&nbsp;\u00d7&nbsp;<em>r<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The following are the important terms related to an electric cell: Fig. 4.1&nbsp;&nbsp;Terminal voltage of a cell of no-lead and at load (a) Cell with internal resistance of no-load (b) Cell at load When load is applied, it delivers current\u00a0I\u00a0to the external (load) resistor\u00a0R\u00a0as shown in\u00a0Figure 4.1(b). The potential difference across the terminals reduces to\u00a0V\u00a0volts [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2597,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[406],"tags":[],"class_list":["post-2599","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-batteries-basic-for-electrical-eng"],"jetpack_featured_media_url":"https:\/\/workhouse.sweetdishy.com\/wp-content\/uploads\/2024\/08\/battery-2.png","_links":{"self":[{"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/posts\/2599","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/comments?post=2599"}],"version-history":[{"count":2,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/posts\/2599\/revisions"}],"predecessor-version":[{"id":2602,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/posts\/2599\/revisions\/2602"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/media\/2597"}],"wp:attachment":[{"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/media?parent=2599"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/categories?post=2599"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/tags?post=2599"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}