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

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Question 36

A resistor in an electronic control circuit has a constant resistance. The table shows the energy transferred to the thermal energy store of the resistor when different currents flow for 40 seconds.

Current in AEnergy transferred in J
0.2016
0.3036

The current is increased to 0.50 A for 40 seconds.

Calculate the energy transferred to the thermal energy store of the resistor. Explain how the data support your calculation.

[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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