A pump takes 20s to lift 50 kg of water to a tank placed at a height of 10m. What is the power of the pump? (g = 10 $m / s^{2}$ )

500 W

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250 W

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100 W

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40 W

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Solution

The correct option is C 250 W
Power, $P = \frac{W}{t} = \frac{m g h}{t} = \frac{50 \times 10 \times 10}{20} = 250 W$

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