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10.2 Resistance

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Question 27
F

A 10 Ω resistor and a variable resistor are in series across a 6.0 V supply. The current must not exceed 0.20 A. What is the smallest safe setting of the variable resistor?

[1]
A

10 Ω10\ \Omega10 Ω

B

40 Ω40\ \Omega40 Ω

C

30 Ω30\ \Omega30 Ω

D

20 Ω20\ \Omega20 Ω

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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