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10.2 Resistance

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Question 13

A circuit in a model railway controller contains two fixed resistors, with resistances of 8.0 Ω and 12 Ω, connected in series with the controller's power supply. The current in the circuit is 0.40 A. What is the potential difference of the power supply?

[1]
A

3.2 V3.2\ \mathrm{V}3.2 V

B

8.0 V8.0\ \mathrm{V}8.0 V

C

4.8 V4.8\ \mathrm{V}4.8 V

D

20 V20\ \mathrm{V}20 V

Markscheme

10.2 Resistance Questions

  1. GCSE
  2. /Physics
  3. /10.2 Resistance

81 exam-style questions on Edexcel GCSE Physics 10.2 Resistance, covering 10.2.1 Current in a circuit and conservation at junctions, 10.2.2 Resistance and variable resistors, 10.2.3 Series and parallel resistance, 10.2.4 I–V characteristics of components, and 10.2.5 LDRs and thermistors. Each one has a worked solution and a mark scheme showing where the marks go.

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