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10.3 Electrical energy and power

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Question 40
F

A metal resistor becomes warmer when a current passes through it. Which statement explains the increase in temperature?

[1]
A

Electrons transfer energy to ions, which vibrate more strongly.

B

Electrons leave the metal, so the number of ions increases.

C

Ions leave the metal, so the number of electrons increases.

D

Ions transfer energy to electrons, which vibrate more strongly.

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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