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

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Question 16
H

A student says that a dynamo gives a direct output because the current in its coil never changes direction. Why is the student wrong?

[1]
A

The current in the coil is direct, but the output current alternates

B

The current in the coil is direct, and the output current is also direct

C

The current in the coil alternates, and the output current also alternates

D

The current in the coil alternates, but the split ring makes the output direct

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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