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10.4 Mains electricity

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Question 24
F

An electric heater operates at 1.5 kW for 4.0 min. During this time, 60 kJ of energy is transferred to the surroundings rather than to the water.

What is the increase in the thermal energy store of the water?

[1]
A

420 kJ420\ \mathrm{kJ}420 kJ

B

360 kJ360\ \mathrm{kJ}360 kJ

C

300 kJ300\ \mathrm{kJ}300 kJ

D

66 kJ66\ \mathrm{kJ}66 kJ

Markscheme

10.4 Mains electricity Questions

  1. GCSE
  2. /Physics
  3. /10.4 Mains electricity

81 exam-style questions on Edexcel GCSE Physics 10.4 Mains electricity, covering 10.4.1 Direct and alternating current, 10.4.2 Live, neutral and earth wires; safety, 10.4.3 Mains wire potential differences and dangers, and 10.4.4 Power ratings and energy use. Each one has a worked solution and a mark scheme showing where the marks go.

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