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4.5.2 The a.c. generator

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Question 3

The coils in two AC generators, X and Y, have the same area. Each coil is rotated at the same constant speed in its respective magnetic field. The peak electromotive force (e.m.f.) generated by generator X is found to be greater than that generated by generator Y.

Three suggestions are made to explain this observation:

  1. The strength of the magnetic field in generator X is greater than that in generator Y.
  2. The number of turns on the coil in generator X is greater than that in generator Y.
  3. The electrical resistance of the coil in generator X is greater than that in generator Y.

Which suggestions are possible explanations for the observation?

A

1 only

B

1 and 2 only

C

2 and 3 only

D

1, 2 and 3

Markscheme

4.5.2 The a.c. generator Questions

  1. IGCSE
  2. /Physics
  3. /4.5.2 The a.c. generator

24 exam-style questions on CIE IGCSE Physics 4.5.2 The a.c. generator. Each one has a worked solution and a mark scheme showing where the marks go.

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