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

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Question 9
H

More work must be done to push a magnet into a coil when the coil forms a complete circuit than when the circuit is broken. Which statement explains why?

[1]
A

The coil has a higher resistance when the circuit is complete

B

The field of the magnet is stronger when the circuit is complete

C

An induced current flows and its magnetic field opposes the motion

D

An induced potential difference acts against the magnetic field lines

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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