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10.3 Electrical energy and power

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Question 44
H

Two heaters transfer the same energy. Heater X operates at 12 V with a current of 2.0 A for 5.0 min. Heater Y operates at 8.0 V with a current of 1.5 A. Use E=IVtE=IVtE=IVt. For how long does heater Y operate?

[1]
A

5.0 min5.0\ \mathrm{min}5.0 min

B

20 min20\ \mathrm{min}20 min

C

2.5 min2.5\ \mathrm{min}2.5 min

D

10 min10\ \mathrm{min}10 min

Markscheme

10.3 Electrical energy and power Questions

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

105 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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