Power MCQs
Practice Power multiple-choice questions from Work and Energy (Class 9 Science) - tap an answer for instant feedback and a step-by-step solution. Practice the full set free on the RankByte app.
PowerQuiz - Solve & Score
Q1. A warehouse robot lifts boxes onto a shelf, doing 240 J of work in 15 s. What is the power developed?
- A.0.0625 W
- B.3600 W
- C.16 W
- D.225 W
Answer: C. 16 W
Power = Work / Time = 240 J / 15 s = 16 W.
Q2. During spring cleaning, a maid shifts furniture and performs 150 J of work over 2 s. What is the power output during this task?
- A.300 W
- B.148 W
- C.75 W
- D.0.0133 W
Answer: C. 75 W
Power = Work / Time = 150 J / 2 s = 75 W.
Q3. A forklift in a depot raises a pallet, expending 600 J of useful work in 5 s. At what rate is work being done?
- A.595 W
- B.0.0083 W
- C.3000 W
- D.120 W
Answer: D. 120 W
Power = Work / Time = 600 J / 5 s = 120 W.
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