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Work, Energy & Power: Power MCQ

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PowerMediumQuestion 6053

Question

Motor lifts 1000 kg water to 20 m in 10 s (g = 10 m/s²). Power of motor:
  1. A
    2 kW
  2. B
    20 kW
    Correct
  3. C
    200 kW
  4. D
    200 W

Correct answer

20 kW

Explanation

P = mgh/t = 1000×10×20/10 = 20,000 W = 20 kW.

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