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What must be the efficiency of an electric kettle marked 500 W, 230 V, if the was found to bring 1 kg of water at 15^o C to boiling point in 15
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Question Video: Finding the Time a Device Is Used for given the Useful Energy Output, Efficiency, and Total Power Output | Nagwa
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Saving water and energy' Cut down costs with this £40 energy efficient kettle on Amazon | Express.co.uk
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Electric kettle with energy efficiency chart, 3D rendering isolated on white background Stock Photo - Alamy
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Energy Efficiency Chart with Electric Kettle, 3D Rendering Stock Illustration - Illustration of colour, certificates: 223743383
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