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

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Question 19
H

A person speaks the same word more loudly into a moving-coil microphone. What happens to the current induced in the coil?

[1]
A

The amplitude increases and the frequency is unchanged

B

The amplitude increases and the frequency also increases

C

The amplitude is unchanged and the frequency increases

D

The amplitude decreases and the frequency is unchanged

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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