{"id":16346,"date":"2025-06-11T09:03:36","date_gmt":"2025-06-11T09:03:36","guid":{"rendered":"https:\/\/gaviki.com\/blog\/?p=16346"},"modified":"2025-06-11T09:03:46","modified_gmt":"2025-06-11T09:03:46","slug":"a-clothes-dryer-will-draw-_-amps-when-operated-at-208-volts","status":"publish","type":"post","link":"https:\/\/gaviki.com\/blog\/a-clothes-dryer-will-draw-_-amps-when-operated-at-208-volts\/","title":{"rendered":"A clothes dryer will draw _ amps when operated at 208 volts"},"content":{"rendered":"\n<p>A clothes dryer will draw <em>_<\/em> amps when operated at 208 volts. The dryer nameplate states that it is rated for 9.7 kW at 240 volts. Select one: a. 53.81 b. 5.94 c. 35.03 d. 40.42 e. 9.7<\/p>\n\n\n\n<p><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\"><strong>The correct answer and explanation is:<\/strong><\/mark><\/p>\n\n\n\n<p><strong>Correct Answer: c. 35.03<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Step-by-Step Explanation:<\/strong><\/h3>\n\n\n\n<p>To calculate the <strong>current (amps)<\/strong> a dryer draws at 208 volts when its nameplate shows <strong>9.7 kW at 240 volts<\/strong>, we must first understand the relationship between <strong>power, voltage, and current<\/strong> using the formula: Power&nbsp;(P)=Voltage&nbsp;(V)\u00d7Current&nbsp;(I)\\text{Power (P)} = \\text{Voltage (V)} \\times \\text{Current (I)} I=PVI = \\frac{P}{V}<\/p>\n\n\n\n<p>However, the power rating of 9.7 kW is given at <strong>240 volts<\/strong>, not at 208 volts. Since the voltage is lower than what the appliance is rated for, the actual power output (watts) <strong>decreases<\/strong> proportionally.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Step 1: Adjust the power to 208 volts<\/strong><\/h3>\n\n\n\n<p>Because most electric dryers use <strong>resistive heating elements<\/strong>, and resistance stays constant, the power used at 208 volts can be estimated using this formula: P208=P240\u00d7(208240)2P_{208} = P_{240} \\times \\left(\\frac{208}{240}\\right)^2 P208=9700\u00d7(208240)2P_{208} = 9700 \\times \\left(\\frac{208}{240}\\right)^2 P208=9700\u00d7(0.8667)2=9700\u00d70.7511=7286watts(approx.)P_{208} = 9700 \\times \\left(0.8667\\right)^2 = 9700 \\times 0.7511 = 7286 watts (approx.)<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Step 2: Find the current at 208 volts<\/strong><\/h3>\n\n\n\n<p>Now use the basic formula: I=PV=7286208\u224835.03&nbsp;ampsI = \\frac{P}{V} = \\frac{7286}{208} \\approx 35.03 \\text{ amps}<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Summary<\/strong><\/h3>\n\n\n\n<p>Although the dryer is rated for 9.7 kW at 240V, when supplied with 208V (a common commercial voltage), the power drops to about <strong>7286 watts<\/strong> due to the fixed resistance of the heating element. Using Ohm\u2019s Law, this power draw results in a current of about <strong>35.03 amps<\/strong>.<\/p>\n\n\n\n<p>Thus, the correct answer is:<\/p>\n\n\n\n<p><strong>c. 35.03<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>A clothes dryer will draw _ amps when operated at 208 volts. The dryer nameplate states that it is rated for 9.7 kW at 240 volts. Select one: a. 53.81 b. 5.94 c. 35.03 d. 40.42 e. 9.7 The correct answer and explanation is: Correct Answer: c. 35.03 Step-by-Step Explanation: To calculate the current (amps) [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-16346","post","type-post","status-publish","format-standard","hentry","category-quiz-questions"],"_links":{"self":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/16346","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/comments?post=16346"}],"version-history":[{"count":1,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/16346\/revisions"}],"predecessor-version":[{"id":16347,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/16346\/revisions\/16347"}],"wp:attachment":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/media?parent=16346"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/categories?post=16346"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/tags?post=16346"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}