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

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Question 28
H

A step-up transformer has a turns ratio of 1 to 25 and is 100% efficient. The current in the primary coil is 50 A. What is the current in the secondary coil?

[1]
A

0.50 A

B

2.0 A

C

25 A

D

1250 A

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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