Power
An engine does 1000 J of work in 20 seconds. What is the power output of the engine?
Select the correct option:
Solution
50 W
- Definition of Power: Power is the rate at which work is performed.
- Formula: P=tWā.
- Application:
- Work W=1000 J.
- Time t=20 s.
- Calculation: P=1000/20=50 W.
- Unit Note: 1 Watt equals 1 Joule per second.
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About This Question
- Subject
- physics
- Chapter
- work, energy and power
- Topic
- power
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
50 W
- Definition of Power: Power is the rate at which work is performed.
- Formula: P=tWā.
- Application:
- Work W=1000 J.
- Time t=20 s.
- Calculation: P=1000/20=50 W.
- Unit Note: 1 Watt equals 1 Joule per second.
This easy difficulty physics question is from the chapter work, energy and power, covering the topic of power. It appeared in the 2025 exam.
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