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4.2 Uses of magnetism

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Question 22
H

The coil of an alternator is made to rotate faster.

What happens to the output of the alternator?

[1]
A

The peak potential difference increases and the frequency stays the same

B

The peak potential difference stays the same and the frequency increases

C

The peak potential difference increases and the frequency decreases

D

The peak potential difference increases and the frequency increases

Markscheme

4.2 Uses of magnetism Questions

  1. GCSE
  2. /Physics
  3. /4.2 Uses of magnetism

48 exam-style questions on OCR GCSE Physics 4.2 Uses of magnetism, covering 4.2.1 The motor effect, 4.2.2 Fleming's left-hand rule, 4.2.3 The force on a current-carrying conductor, 4.2.4 The electric motor, 4.2.5 Electromagnetic induction, 4.2.6 Alternators and dynamos, 4.2.7 How transformers work, 4.2.8 Transformer turns ratio, 4.2.9 Potential differences and turns in transformers, and 4.2.10 Microphones, loudspeakers and headphones. Each one has a worked solution and a mark scheme showing where the marks go.

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