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

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Question 24

A workshop supply uses a transformer that is 100% efficient. The transformer has the following values.

CoilNumber of turnsPotential differenceCurrent
Primary1000230 V1.0 A
Secondary200To be calculatedTo be calculated

A load connected to the secondary requires a current of at least 4.5 A.

Calculate the current in the secondary coil and determine whether the transformer can supply the load.

[4]
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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