{"id":4906,"date":"2021-06-27T15:51:32","date_gmt":"2021-06-27T22:51:32","guid":{"rendered":"https:\/\/gurumuda.net\/physics\/?p=4906"},"modified":"2021-06-27T15:51:32","modified_gmt":"2021-06-27T22:51:32","slug":"electric-power","status":"publish","type":"post","link":"https:\/\/gurumuda.net\/physics\/electric-power.htm","title":{"rendered":"Electric power","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<h3 class=\"western\" style=\"text-align: justify\" align=\"justify\"><span style=\"font-family: Times new roman, serif\"><span style=\"font-size: medium\"><b>Definition of electric power<\/b><\/span><\/span><\/h3>\n<p class=\"western\" style=\"text-align: justify\" align=\"justify\"><span style=\"font-family: Times new roman, serif\"><span style=\"font-size: medium\">The power learned in the work and Energy is defined as the work done during a certain time interval. Work is a process of energy change so that power can be understood as a change in energy that occurs during a certain time interval.<\/span><\/span><\/p>\n<p class=\"western\" style=\"text-align: justify\" align=\"justify\"><span style=\"font-family: Times new roman, serif\"><span style=\"font-size: medium\">Electric power is a change in electrical energy during a certain time interval. In a review of electrical potential, it is explained that changes in electric potential energy occur when an electric charge passes through an <a href=\"https:\/\/gurumuda.net\/physics\/electric-potential.htm\">electric potential<\/a> difference.<\/span><\/span><!--more--><\/p>\n<h3 class=\"western\" style=\"text-align: justify\" align=\"justify\"><span style=\"font-family: Times new roman, serif\"><span style=\"font-size: medium\"><b>Equation of electric power<\/b><\/span><\/span><\/h3>\n<p style=\"text-align: justify\" align=\"justify\"><span style=\"font-family: Times new roman, serif\"><span style=\"font-size: medium\">Mathematically, the change in electric potential energy (\u0394EP) is proportional to the charge (Q) and the electric voltage (V), expressed by the equation \u0394EP = Q V. <\/span><\/span><\/p>\n<p style=\"text-align: justify\" align=\"justify\"><span style=\"font-family: Times new roman, serif\"><span style=\"font-size: medium\">Power is a change in electrical potential energy over a certain time interval, mathematically expressed through equation 1:<\/span><\/span><\/p>\n<p align=\"justify\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-4907\" src=\"https:\/\/gurumuda.net\/physics\/wp-content\/uploads\/2018\/11\/Electric-power-1.png\" alt=\"Electric power 1\" width=\"199\" height=\"76\" \/><\/p>\n<p class=\"western\" style=\"text-align: justify\" align=\"justify\"><span style=\"font-family: Times new roman, serif\"><span style=\"font-size: medium\">The electric charge that flows during a certain time interval is an electric current, mathematically expressed through the equation I = Q\/t. Equation 1 can be changed to equation 2:<\/span><\/span><\/p>\n<p align=\"justify\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-4908\" src=\"https:\/\/gurumuda.net\/physics\/wp-content\/uploads\/2018\/11\/Electric-power-2.png\" alt=\"Electric power 2\" width=\"197\" height=\"31\" \/><\/p>\n<p class=\"western\" style=\"text-align: justify\" align=\"justify\"><span style=\"font-family: Times new roman, serif\"><span style=\"font-size: medium\">Based on these two equations, it can be concluded that changes in electrical energy during a certain time interval occur when an electric current passes through a certain electric potential difference. Electric power is proportional to the strength of the electric current and electric potential, so if the electric current and electric potential increase, the electric power also increases.<\/span><\/span><\/p>\n<p class=\"western\" style=\"text-align: justify\" align=\"justify\"><span style=\"font-family: Times new roman, serif\"><span style=\"font-size: medium\">If an electric current flows through a resistor that has a constant electrical resistance, the electric power can be calculated using equation 3 or equation 4.<\/span><\/span><\/p>\n<p align=\"justify\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-4909\" src=\"https:\/\/gurumuda.net\/physics\/wp-content\/uploads\/2018\/11\/Electric-power-3.png\" alt=\"Electric power 3\" width=\"198\" height=\"140\" \/><\/p>\n<h3 class=\"western\" style=\"text-align: justify\" align=\"justify\"><span style=\"font-family: Times new roman, serif\"><span style=\"font-size: medium\"><b>Unit of electric power<\/b><\/span><\/span><\/h3>\n<p class=\"western\" style=\"text-align: justify\" align=\"justify\"><span style=\"font-family: Times new roman, serif\"><span style=\"font-size: medium\">Based on equation 1, the International System unit of Energy is Joule and the International System unit of time is second so that the unit of the electric power is Joule\/second, abbreviated J\/s. Joule\/second is also called Watt. 1 Watt = 1 Joule\/second.<\/span><\/span><\/p>\n<p class=\"western\" style=\"text-align: justify\" align=\"justify\"><span style=\"font-family: Times new roman, serif\"><span style=\"font-size: medium\">Based on equation 2, the unit of electric potential is Volt and the unit of electric current is Ampere so that the unit of electric power is Volt Ampere, abbreviated VA.<\/span><\/span><\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>Definition of electric power The power learned in the work and Energy is defined as the work done during a certain time interval. Work is a process of energy change so that power can be understood as a change in energy that occurs during a certain time interval. Electric power is a change in electrical &#8230; <a title=\"Electric power\" class=\"read-more\" href=\"https:\/\/gurumuda.net\/physics\/electric-power.htm\" aria-label=\"Read more about Electric power\">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 power","_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":[2],"tags":[],"class_list":["post-4906","post","type-post","status-publish","format-standard","hentry","category-basic-physics-tutorials"],"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/gurumuda.net\/physics\/wp-json\/wp\/v2\/posts\/4906","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=4906"}],"version-history":[{"count":0,"href":"https:\/\/gurumuda.net\/physics\/wp-json\/wp\/v2\/posts\/4906\/revisions"}],"wp:attachment":[{"href":"https:\/\/gurumuda.net\/physics\/wp-json\/wp\/v2\/media?parent=4906"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gurumuda.net\/physics\/wp-json\/wp\/v2\/categories?post=4906"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gurumuda.net\/physics\/wp-json\/wp\/v2\/tags?post=4906"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}