what is relation between the power of an electrical appliance and the energy it takes from the mains
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The power of an electrical appliance tells us how much electrical energy it transfers in a second. Power, P is measured in watts (W) where: 1 W = 1 J/s (joule/second). Appliances used for heating have a much higher rating than those used to produce light or sound.
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The power of an electrical appliances tells us how much electrical energy it transfers in a second. Power, P is measured in watts (W) where: 1 W= 1 J/s (joule/second). Appliances used for heating have a much higher rating then those used to produce light or sound.
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