PowerPractice Questions & MCQs
Practice Power questions from Work and Energy (Class 9 Science) - important MCQs with answers and step-by-step solutions. Solve the sample questions below, then 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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Get early accessPower - Frequently asked questions
Where can I practise Power questions for Class 9 Science?
RankByte has Power practice questions and MCQs from Work and Energy (Class 9 Science), each with the correct answer and a step-by-step solution - free to start.
Are these Power questions important for the exam?
Yes. These Power important questions follow the Science exam pattern (CBSE Boards, plus JEE and NEET foundation), so they help with both school and competitive prep.
Do the Power questions come with answers and solutions?
Every Power question on RankByte comes with the correct answer and a full step-by-step solution, so you learn the concept instead of just guessing.