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

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Question 20
H

A loudspeaker and a moving-coil microphone are built from the same parts. Which statement correctly compares how they work?

[1]
A

Both use the generator effect, but transfer energy in opposite directions

B

A loudspeaker uses the motor effect and a microphone the generator effect

C

A microphone uses the motor effect and a loudspeaker the generator effect

D

Both use the motor effect, but they transfer energy in opposite directions

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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