AQA GCSE · Physics 8463

Domestic uses and safety: Practice Questions

5 multiple-choice questions marked as you go, and 2 written questions with worked solutions. All on Domestic uses and safety.

7 questions13 marksFree, no account

Question 1

1 mark

Inside a standard UK three-core cable, what is the color of the insulation covering the neutral wire?

Question 2

1 mark

What are the typical values for the frequency and potential difference of the UK domestic mains electricity supply?

Question 3

1 mark

An electric heater with a resistance of \(46\text{ }\Omega\) is connected to the UK mains supply (\(230\text{ V}\)). Calculate the power of the heater.

Question 4

1 mark

A toaster is connected to the UK mains supply. What is the approximate potential difference between the live wire and the earth wire?

Question 5

1 mark

A microwave oven uses the UK mains supply (\(230\text{ V}\)). If the current through the device is \(4\text{ A}\), calculate the power of the microwave.

Question 6

2 marks

State the insulation color for the live, neutral, and earth wires used in a standard UK three-core cable.

Write your answer out first, then check it against the worked solution.

Question 7

6 marks

Explain how the earth wire and a fuse work together to protect a user if a fault causes the metal case of an appliance to become live.

Write your answer out first, then check it against the worked solution.

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