O-LevelPhysicsEnergy & Work5054/12 · Oct/Nov 2016 · Q151 Mark

An electric motor is used to operate a lift (elevator). The motor does 140000 J of work in 70s. What is the output power of the motor?

A0.50 milliwatts

B2.0 watts

C2.0 kilowatts

D9.8 megawatts

✓ Correct answer

C: 2.0 kilowatts

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Topic: Energy & Work, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, Oct/Nov 2016 Paper 1 Variant 2, question 15.

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