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10.3 Electrical energy and power

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Question 41
F

An electric kettle heats water. Which energy transfer is useful and which is unwanted?

[1]
A

Heating the room is unwanted; heating the water is unwanted.

B

Heating the room is useful; heating the water is unwanted.

C

Heating the water is useful; heating the room is useful.

D

Heating the water is useful; heating the room is unwanted.

Markscheme

10.3 Electrical energy and power Questions

  1. GCSE
  2. /Physics
  3. /10.3 Electrical energy and power

105 exam-style questions on Edexcel GCSE Physics 10.3 Electrical energy and power, covering 10.3.1 The heating effect of an electric current, 10.3.2 Reducing energy transfer in wires, 10.3.3 Advantages and disadvantages of the heating effect, 10.3.4 Energy transferred by an electrical circuit, 10.3.5 Electrical power, and 10.3.6 Energy transfers in domestic devices. Each one has a worked solution and a mark scheme showing where the marks go.

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