{"id":19080,"date":"2024-04-15T05:34:40","date_gmt":"2024-04-15T05:34:40","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=19080"},"modified":"2024-04-15T05:34:40","modified_gmt":"2024-04-15T05:34:40","slug":"which-one-of-the-following-equations-most-directly-determines-the-power-dissipation-of-a-resistance-when-you-know-the-voltage-drop-and-amount-of-resistance-a-p-i2r-b-p-ie-c-p-e2-r-d-i-p-e","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-equations-most-directly-determines-the-power-dissipation-of-a-resistance-when-you-know-the-voltage-drop-and-amount-of-resistance-a-p-i2r-b-p-ie-c-p-e2-r-d-i-p-e\/","title":{"rendered":"Which one of the following equations most directly determines the power dissipation of a resistance when you know the voltage drop and amount of resistance? A. P = I2R B. P = IE C. P = E2\/R D. I = P\/E E. None of the above"},"content":{"rendered":"<p>[amp_mcq option1=&#8221;P = I2R&#8221; option2=&#8221;P = IE&#8221; option3=&#8221;P = E2\/R&#8221; option4=&#8221;I = P\/E E. None of the above&#8221; correct=&#8221;option1&#8243;]<!--more--><\/p>\n<p>The correct answer is A. P = I2R.<\/p>\n<p>Power is the rate at which energy is transferred or converted. In the case of a resistor, power is dissipated as heat. The amount of power dissipated is proportional to the square of the current through the resistor, and to the resistance of the resistor.<\/p>\n<p>The equation $P = I^2R$ can be derived from Ohm&#8217;s law, which states that the voltage across a resistor is equal to the current through the resistor times the resistance of the resistor. In other words, $V = IR$. Substituting this into the equation for power, $P = IV$, we get $P = I^2R$.<\/p>\n<p>Option B, $P = IE$, is incorrect because it does not take into account the resistance of the resistor. Option C, $P = E^2\/R$, is incorrect because it does not take into account the current through the resistor. Option D, $I = P\/E$, is incorrect because it does not take into account the resistance of the resistor. Option E, None of the above, is incorrect because the equation $P = I^2R$ is the correct equation for power dissipation in a resistor.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>[amp_mcq option1=&#8221;P = I2R&#8221; option2=&#8221;P = IE&#8221; option3=&#8221;P = E2\/R&#8221; option4=&#8221;I = P\/E E. None of the above&#8221; correct=&#8221;option1&#8243;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[682],"tags":[],"class_list":["post-19080","post","type-post","status-publish","format-standard","hentry","category-electronic-principles","no-featured-image-padding"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.2 (Yoast SEO v23.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Which one of the following equations most directly determines the power dissipation of a resistance when you know the voltage drop and amount of resistance? A. P = I2R B. P = IE C. P = E2\/R D. I = P\/E E. None of the above<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-equations-most-directly-determines-the-power-dissipation-of-a-resistance-when-you-know-the-voltage-drop-and-amount-of-resistance-a-p-i2r-b-p-ie-c-p-e2-r-d-i-p-e\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Which one of the following equations most directly determines the power dissipation of a resistance when you know the voltage drop and amount of resistance? A. P = I2R B. P = IE C. P = E2\/R D. I = P\/E E. None of the above\" \/>\n<meta property=\"og:description\" content=\"[amp_mcq option1=&#8221;P = I2R&#8221; option2=&#8221;P = IE&#8221; option3=&#8221;P = E2\/R&#8221; option4=&#8221;I = P\/E E. 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A. P = I2R B. P = IE C. P = E2\/R D. I = P\/E E. None of the above","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-equations-most-directly-determines-the-power-dissipation-of-a-resistance-when-you-know-the-voltage-drop-and-amount-of-resistance-a-p-i2r-b-p-ie-c-p-e2-r-d-i-p-e\/","og_locale":"en_US","og_type":"article","og_title":"Which one of the following equations most directly determines the power dissipation of a resistance when you know the voltage drop and amount of resistance? A. P = I2R B. P = IE C. P = E2\/R D. I = P\/E E. None of the above","og_description":"[amp_mcq option1=&#8221;P = I2R&#8221; option2=&#8221;P = IE&#8221; option3=&#8221;P = E2\/R&#8221; option4=&#8221;I = P\/E E. 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