Calculate the power of a source if it produces energy of $250 J$ in $10 s$ .

2500 W

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2.5 W

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25 W

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Zero

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Solution

The correct option is B $25 W$
Given,
Energy, $E = 250 J$
Time, $t = 10$ s

We know,
Power of the source, $P = \frac{E}{t}$

$P = \frac{250}{10}$

$P = 25 W$

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