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10.3 Electrical energy and power

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Question 11

A high-intensity searchlight on an emergency rescue helicopter is connected to a 28.0 V DC electrical supply.

A current of 15.5 A flows through the searchlight.

Calculate the electrical power supplied to the searchlight.

Use the equation:

power=potential difference×current \text{power} = \text{potential difference} \times \text{current} power=potential difference×current
[2]
Markscheme

10.3 Electrical energy and power Questions

  1. GCSE
  2. /Physics
  3. /10.3 Electrical energy and power

31 exam-style questions on Edexcel GCSE Physics 10.3 Electrical energy and power, covering 10.3.1 The heating effect of an electric current, 10.3.2 Reducing energy transfer in wires, 10.3.3 Advantages and disadvantages of the heating effect, 10.3.4 Energy transferred by an electrical circuit, 10.3.5 Electrical power, and 10.3.6 Energy transfers in domestic devices. Each one has a worked solution and a mark scheme showing where the marks go.

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