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Power

The power out...

Question

The power output of a motor is $5 k W .$ What is the work done by the motor in $5 s$ ?

2.5 k J

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25 kJ

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250 k J

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25000 k J

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Solution

The correct option is B 25 kJ
Power $= \frac{W o r k}{T i m e}$
So Work $= P o w e r \times T i m e$
Given:
$P = 5 k W$
$t = 5 s e c$
$W = 5 \times 5 = 25 k J$

Hence, option B is correct.

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