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An electric kettle is rated 500W, 220V. ...

An electric kettle is rated 500W, 220V. It is used to heat water for 30 seconds. Assuming the voltage to be 220 V, calculate the heat produced.

Text Solution

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Since the voltage is 220 V, the power consumed is P=500 W. The heat produced in 30 seconds is `U=Pt=(500 W)xx(30 s)=15,000J`.
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