Define 1 Watt of power. A lamp consumes 1000 J of electrical energy in 10s. Calculate its power
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A body is said to have power of 1 watt if it does work at the rate of 1 joule in 1 s,
i.e., 1W=1J/1s
Power is given by the expression,
Power=Work done /Time
Work done = Energy consumed by the lamp = 1000 J
Power=1000 / 10 = 100 Js−1
= 100 W
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