Skip to content

Course home

Sign up

10.4 Mains electricity

EasyMediumHard
1234567891011
Question 5

A student uses a small fan in an experiment. The fan is connected to a d.c. power pack and operates at 12 V. Its power rating is 18 W.

a.

State how the direction of the current from the power pack behaves.

[1]
b.

Name the type of supply from a UK mains socket.

[1]
c.

Calculate the current in the fan when it is working normally.

[2]
d.

The fan transfers 1620 J of energy while working at its rated power.

Calculate the time for which the fan operates.

[2]
e.

State what the fan's power rating tells you about the energy it transfers when working normally.

[1]
Markscheme

10.4 Mains electricity Questions

  1. GCSE
  2. /Physics
  3. /10.4 Mains electricity

81 exam-style questions on Edexcel GCSE Physics 10.4 Mains electricity, covering 10.4.1 Direct and alternating current, 10.4.2 Live, neutral and earth wires; safety, 10.4.3 Mains wire potential differences and dangers, and 10.4.4 Power ratings and energy use. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank