Plugs And Wires

Question 1

What is the colour and function of the live wire?

Answer 1

Brown, provides potential difference from the power supply approx (230 V)

Question 2

What is the colour and function of the neutral wire?

Answer 2

Blue, completes the circuit back to the power supply. Current flows through the neutral wire but the potential difference is 0V

Question 3

What is the colour and function of the earth wire?

Answer 3

Green and yellow, stops the casing of the electrical appliance from carrying a current. It only carries a current when there is a fault in the wiring

Question 4

What are the three maximum current ratings of a fuse?

Answer 4

3,5,13

Question 5

What is the alternating current and frequency of the mains supply?

Answer 5

230V, 50Hz

Question 6

What are wires made with and coated with?

Answer 6

Copper, Insulating Plastic

Question 7

What is the live wire connected to?

Answer 7

The fuse

Question 8

Why do people get electrocuted if they touch a live wire?

Answer 8

They would get electrocuted because they are in contact with the earth