If $100 J / s$ is the energy required for an appliance to run, what is the power consumed by it in watts, if it operates at $220 V$ ?

22 W

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22000 W

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100 W

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1000 W

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Solution

The correct option is C
100 W

Power = work done per unit time
$\Rightarrow 1 J / 1 s = 1 w a t t \Rightarrow 100 J / s = 100 w a t t$

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