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

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Question 24
H

A step-up transformer is 100% efficient. Which statement about the currents in its two coils is correct?

[1]
A

The current in the secondary coil is larger than that in the primary coil

B

The current is the same in both coils, because power is conserved in the core

C

The current in the secondary coil is smaller than that in the primary coil

D

The current in the secondary coil depends only on the number of turns on it

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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