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

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Question 15
H

The output of an alternator falls to zero twice during each complete rotation of its coil. Which statement explains why?

[1]
A

The coil momentarily loses contact with both of the slip rings

B

The sides of the coil momentarily move parallel to the field lines

C

The sides of the coil momentarily move at right angles to the field

D

The coil momentarily stops rotating as it passes the magnet poles

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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