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

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Question 3

An alternator powers the display on an exercise bicycle. The original coil has 400 turns and rotates at 15 revolutions per second.

Four replacement setups are tested. The magnetic field and all other features of the alternator are unchanged.

SetupNumber of turns on the coilRotation rate in revolutions per second
W80015
X80030
Y40030
Z20015

The replacement must produce a greater peak potential difference without changing the number of output cycles produced each second.

Which setup meets both requirements?

[1]
A

Setup W

B

Setup Z

C

Setup Y

D

Setup X

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)

96 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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