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

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Question 7

A model vehicle has a rotating-coil generator in a magnetic field. The coil is connected to an external circuit by a split-ring commutator.

Explain why the current in the external circuit flows in only one direction as the coil rotates.

Predict what would happen to the direction of this current if the coil were rotated in the opposite direction.

[3]
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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