If $100 J / s$ is required for an appliance to run, W is the power consumed, if it operates at $220 V$ .

220 W

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200 W

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100 W

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180 W

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Solution

The correct option is C $100 W$
Given,
Energy required per second = $100 J$
Power = work done per unit time
$\Rightarrow 1 J / s = 1 w a t t \Rightarrow 100 J / s = 100 w a t t$

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

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