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Kilowatt-hour

296 bytes added, 16:24, 13 December 2019
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: The '''kilowatt-hour''' is used by electricity suppliers instead of [[Joule]]s.
: A '''kilowatt-hour''' is calculated by multiplying the power rating of an appliance in [[kilowatt]]s by the time the appliance is used for in [[hour]]s.
: A '''kilowatt-hour''' is 3,600,000 [[Joule]]s.
 
===Equation===
: [[Energy]] ([[kilowatt-hour]]s) = [[Power]] ([[kilowatt]]s) x [[time]] ([[hour]]s)
: A '''kilowatt-hour''' is 3,600,000 [[Joule]]s.
===Energy Usage of AppliancesExample Calculations===
: The amount of [[energy]] an '''appliance''' uses depends on the power rating and how long the '''appliance''' is used for.
: [[Energy]] usage for '''appliances''' is measured in [[kilowatt-hour]]s. This means all [[power]] ratings need to be in [[kilowatt]]s and time should be in [[hour]]s.
: Energy = 1.875kilowatt-hours
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===References===
====OCR====
 
:[https://www.amazon.co.uk/gp/product/0198359837/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359837&linkCode=as2&tag=nrjc-21&linkId=3c4229e8b023b2b60768e7ea2307cc6f ''Kilowatt-hour (kWh), pages 202, Gateway GCSE Physics, Oxford, OCR '']
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