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13.2 Transformers and the National Grid

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Question 9

An electrically powered lifting table contains a transformer that is 100% efficient. The primary coil has a potential difference of 230 V and carries a current of 0.50 A. The current in the secondary coil is 5.0 A.

What is the secondary potential difference?

[1]
A

23 V23\ \mathrm{V}23 V

B

230 V230\ \mathrm{V}230 V

C

115 V115\ \mathrm{V}115 V

D

2300 V2300\ \mathrm{V}2300 V

Markscheme

13.2 Transformers and the National Grid Questions

  1. GCSE
  2. /Physics
  3. /13.2 Transformers and the National Grid

108 exam-style questions on Edexcel GCSE Physics 13.2 Transformers and the National Grid, covering 13.2.1 Transformers and induction, 13.2.2 The transformer turns-ratio equation, 13.2.3 The National Grid, 13.2.4 The transformer power equation, and 13.2.5 Advantages of high-voltage transmission. Each one has a worked solution and a mark scheme showing where the marks go.

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