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1.7.4 Power

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Question 76

Two different electric hoists, Hoist X and Hoist Y, are used to lift the same heavy crate from the ground to a platform.

Hoist X takes 15 s to lift the crate. The useful work done is WWW, and the useful power developed is PPP.

Hoist Y takes 10 s to lift the same crate to the same platform.

Which of the following correctly describes the useful work done and the useful power developed by Hoist Y?

A

Useful work: WWW; Useful power: less than PPP

B

Useful work: WWW; Useful power: more than PPP

C

Useful work: more than WWW; Useful power: less than PPP

D

Useful work: more than WWW; Useful power: more than PPP

Markscheme

1.7.4 Power Questions

  1. IGCSE
  2. /Physics
  3. /1.7.4 Power

95 exam-style questions on CIE IGCSE Physics 1.7.4 Power. Each one has a worked solution and a mark scheme showing where the marks go.

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