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10.3 Electrical energy and power

10.3 Electrical energy and power

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Question 13

An LED desk lamp is connected to the 230 V mains supply. Over a period of 4 minutes4\text{ minutes}4 minutes, it transfers 11 040 J11\,040\text{ J}11040 J of energy.

Calculate the current in the LED desk lamp.

Use the equation:

I=EV×t I = \frac{E}{V \times t} I=V×tE​
[3]
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. Each one has a worked solution and a mark scheme showing where the marks go.

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