Power (conceptual)
Easyphysics
If two machines do the same work W but Machine A finishes sooner than B, then compared to B, A has?
Select the correct option:
Solution
Incorrect! Answer:
Higher power
- Definition: Power is the rate of doing work (P=W/t).
- Comparison: Both machines perform the same total work (W).
- Time factor: Machine A finishes in time tA<tB.
- Logic: Since power is inversely proportional to time for a fixed amount of work, a smaller t results in an increased P.
- Conclusion: Machine A has higher power output than B.
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About This Question
- Subject
- physics
- Chapter
- work, energy and power
- Topic
- power (conceptual)
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
Higher power
- Definition: Power is the rate of doing work (P=W/t).
- Comparison: Both machines perform the same total work (W).
- Time factor: Machine A finishes in time tA<tB.
- Logic: Since power is inversely proportional to time for a fixed amount of work, a smaller t results in an increased P.
- Conclusion: Machine A has higher power output than B.
This easy difficulty physics question is from the chapter work, energy and power, covering the topic of power (conceptual). It appeared in the 2025 exam.
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