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1.7.4 Power

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Question 8

The work done and the time taken by four machines are listed below:

  • Machine A: work done = 150 kJ150 \text{ kJ}150 kJ, time taken = 15 s15 \text{ s}15 s
  • Machine B: work done = 300 kJ300 \text{ kJ}300 kJ, time taken = 10 s10 \text{ s}10 s
  • Machine C: work done = 150 kJ150 \text{ kJ}150 kJ, time taken = 10 s10 \text{ s}10 s
  • Machine D: work done = 300 kJ300 \text{ kJ}300 kJ, time taken = 15 s15 \text{ s}15 s

Which machine is the most powerful?

[4]
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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