{"page":"\u003clink rel=\"stylesheet\" href=\"https://lessonplanet.com/assets/packs/css/resources-572d6a42.css\" /\u003e\n\u003clink rel=\"stylesheet\" href=\"https://lessonplanet.com/assets/packs/css/lp_boclips_stylesheets-f4d0de30.css\" media=\"all\" /\u003e\n\u003cdiv data-title='Energy Use In Electrical Appliances | Energy | Physics | FuseSchool' data-url='/boclips/videos/625f69b262b39c0f0b0e690a' data-video-url='/boclips/videos/625f69b262b39c0f0b0e690a' id='bo_player_modal'\u003e\n\u003cdiv class='boclips-resource-page modal-dialog panel-container'\u003e\n\u003cdiv class='react-notifications-root'\u003e\u003c/div\u003e\n\u003cdiv class='rp-header'\u003e\n\u003cdiv class='rp-type'\u003e\n\u003ci aria-hidden='true' class='fai fa-regular fa-circle-play'\u003e\u003c/i\u003e\nVideo\n\u003c/div\u003e\n\u003ch1 class='rp-title' id='video-title'\u003e\nEnergy Use In Electrical Appliances | Energy | Physics | FuseSchool\n\u003c/h1\u003e\n\u003cdiv class='rp-actions'\u003e\n\u003cdiv class='mr-1'\u003e\n\u003ca class=\"btn btn-success\" data-posthog-event=\"Signup: LP Signup Activity\" data-posthog-location=\"body_link_boclips\" data-remote=\"true\" href=\"/subscription/new\"\u003e\u003cspan\u003e\u003cspan\u003eGet Free Access\u003c/span\u003e\u003cspan class=\"\"\u003e for 10 Days\u003c/span\u003e\u003cspan\u003e!\u003c/span\u003e\u003c/span\u003e\u003c/a\u003e\n\u003c/div\u003e\n\u003c/div\u003e\n\u003c/div\u003e\n\u003cdiv class='rp-body'\u003e\n\u003cdiv class='rp-info'\u003e\n\u003cdiv aria-label='Hide resource details' class='rp-hide-info' role='button' tabindex='0'\u003e\u0026times;\u003c/div\u003e\n\u003ci aria-label='Expand resource details' class='rp-expand-info fai fa-solid fa-up-right-and-down-left-from-center' role='button' tabindex='0'\u003e\u003c/i\u003e\n\u003ci aria-label='Compress resource details' class='rp-compress-info fai fa-solid fa-down-left-and-up-right-to-center' role='button' tabindex='0'\u003e\u003c/i\u003e\n\u003cdiv class='rp-rating'\u003e\n\u003cspan class='resource-pool'\u003e\n\u003cspan class='pool-label'\u003ePublisher:\u003c/span\u003e\n\u003cspan class='pool-name'\u003e\n\u003cspan class='text'\u003e\u003ca data-publisher-id=\"30356011\" href=\"/search?publisher_ids%5B%5D=30356011\"\u003eCurated Video\u003c/a\u003e\u003c/span\u003e\n\u003c/span\u003e\n\u003c/span\u003e\n\u003c/div\u003e\n\u003cdiv class='rp-description'\u003e\n\u003cspan class='short-description'\u003eDo you ever have arguments at home about leaving appliances on and wasting electricity? In this video we are going to look at measuring energy use, in electrical appliances. The unit of energy is the Joule (J). However, when dealing with...\u003c/span\u003e\n\u003cspan class='full-description hide'\u003eDo you ever have arguments at home about leaving appliances on and wasting electricity? In this video we are going to look at measuring energy use, in electrical appliances. The unit of energy is the Joule (J). However, when dealing with electricity, we actually use Watts (W). A Watt is a measure of power where 1 Watt is equal to 1 Joule per second So a 100W light bulb uses 100J of energy every second An electrical device will have a power rating. This is the amount of electrical energy the device needs to work. We can calculate how much electrical energy a device transfers, by multiplying the power rating (W) by the amount of time the device is on for (in hours) The unit of electrical energy transferred is the Watt Hour (Wh). This is likely to be a very large number, so we usually give the number as kilowatt hours where 1kilowatt hour is equal to 1000 Watt hours. Let’s look at an example. A computer has a power rating of 250W. If it is used for 6 hours how much energy is transferred to it? Can you substitute the values into our equation? So how much would that cost to use? To work this out we have to know how much a kWh costs. This differs between different countries, different companies within a country, and even different tariffs from the same company. A whole office of computers… the price starts to clock up quite quickly. And that’s before we think about the lights, and charging our phones. CREDITS Animation \u0026 Design: Reshenda Wakefield Narration: Dale Bennett Script: Bethan Parry SUBSCRIBE to the FuseSchool YouTube channel for many more educational videos. Our teachers and animators come together to make fun \u0026 easy-to-understand videos in Chemistry, Biology, Physics, Maths \u0026 ICT. 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