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1.7 Energy, work and power

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Question 226

A pump does 720 000 J720\,000\text{ J}720000 J of work to raise water to fill a tank. It takes 5 minutes5\text{ minutes}5 minutes to fill the tank.

What is the power of the pump?

A

2.4 kW2.4\text{ kW}2.4 kW

B

140 kW140\text{ kW}140 kW

C

3600 kW3600\text{ kW}3600 kW

D

220 000 kW220\,000\text{ kW}220000 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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