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Calculations : Class 9 Science MCQ Practice Questions & Answers (English) - ObjectiveMcq

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HomePracticeClass 9 SciencePhysicsPowerCalculations

Calculations in Class 9 Science : Practice MCQ Questions & Answers with Explanations

1 practice sets · Page 1 of 1

Class 9 ScienceMediumPhysics PowerCalculations

1.

What is the power required to do 100 J of work in 5 seconds?

A

200 W

B

50 W

C

10 W

D

20 W

View Answer

Correct Answer: D — 20 W

Explanation:

Power = Work ÷ Time = 100 ÷ 5 = 20 W.