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

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Question 7

A solar farm sends electrical power through transmission cables. The power transmitted stays fixed.

What happens to the current and the heating of the cables if the potential difference is reduced?

[1]
A

The current decreases and the cables heat less

B

The current increases and the cables heat less

C

The current decreases and the cables heat more

D

The current increases and the cables heat more

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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