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1.7 Energy, work and power

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Question 29

An electric pump does 650 000 J650\,000\text{ J}650000 J of work to raise water to fill a storage tank. It takes 6 minutes6\text{ minutes}6 minutes to fill the tank. What is the average power of the pump?

A

1.8 kW1.8\text{ kW}1.8 kW

B

110 kW110\text{ kW}110 kW

C

3900 kW3900\text{ kW}3900 kW

D

230 000 kW230\,000\text{ kW}230000 kW

Markscheme

1.7 Energy, work and power Questions

  1. IGCSE
  2. /Physics
  3. /1.7 Energy, work and power

533 exam-style questions on CIE IGCSE Physics 1.7 Energy, work and power, covering 1.7.1a Energy stores and energy transfers, 1.7.1b Conservation of energy, 1.7.1c Kinetic and gravitational potential energy, 1.7.2 Work done, 1.7.3 Energy resources, 1.7.3a Energy resources and electricity generation, 1.7.3b Nuclear fusion as an energy source, 1.7.3c Efficiency of energy transfer, and 1.7.4 Power. Each one has a worked solution and a mark scheme showing where the marks go.

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