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7.3 Induced potential, transformers and the National Grid (HT only)

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Question 4
H

A wire is moved downwards between the poles of a magnet and a current is induced in it. Two changes are then made together: the wire is moved upwards instead, and the magnet is turned round. What is the effect on the induced current?

[1]
A

The direction of the induced current is unchanged

B

The direction of the induced current is reversed

C

The size of the induced current falls to zero

D

The size of the induced current is doubled

Markscheme

7.3 Induced potential, transformers and the National Grid (HT only) Questions

  1. GCSE
  2. /Physics
  3. /7.3 Induced potential, transformers and the National Grid (HT only)

40 exam-style questions on AQA GCSE Physics 7.3 Induced potential, transformers and the National Grid (HT only), covering 7.3.1 Induced potential (HT only), 7.3.2 Uses of the generator effect (HT only), 7.3.3 Microphones (HT only), and 7.3.4 Transformers (HT only). Each one has a worked solution and a mark scheme showing where the marks go.

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