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7.2 The motor effect

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Question 15
H

A pair of headphones works in the same way as a moving-coil loudspeaker.

a.

The size of the alternating current supplied to the headphones is increased. The frequency of the current does not change. Explain the effect of this on the sound produced.

[2]
b.

The frequency of the alternating current is increased. The size of the current does not change. Explain the effect of this on the sound produced.

[2]
Markscheme

7.2 The motor effect Questions

  1. GCSE
  2. /Physics
  3. /7.2 The motor effect

90 exam-style questions on AQA GCSE Physics 7.2 The motor effect, covering 7.2.1 Electromagnetism, 7.2.2 Fleming's left-hand rule (HT only), 7.2.3 Electric motors (HT only), and 7.2.4 Loudspeakers (HT only). Each one has a worked solution and a mark scheme showing where the marks go.

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