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Electric Power

The amount of...

Question

The amount of work done (or, energy spent) by a source of power $1 k W$ in $1 h$ time is:

1 J

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1 W h

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1 k W h

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1 c a l o r i e

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Solution

The correct option is D $1 k W h$
$E n e r g y$ $s p e n t$ = $P o w e r \times t i m e$
$E = 1 k W h \times 1 h$ = $1 k W h$
$1 k W h$ is the amount of work done (or, energy spent) by a source of $1 k W$ power in $1 h$ time.

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