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13.2 Transformers and the National Grid

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Question 6

A transformer supplies a model railway controller. During a test, 8.0 kJ of energy is supplied to the transformer. Its efficiency is 75%.

a.

Calculate the energy dissipated during the test.

[2]
b.

Suggest one process inside the transformer that accounts for some of this energy being dissipated.

[1]
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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