Electricity

Question 1

What is the function of the live wire

Answer 1

The function of the live wire is to provide a current with the potential difference (voltage) of 230V from the power supply.

Question 2

What is the function of the neutral wire?

Answer 2

Completes the circuit.

Question 3

What is the function of the earth wire?

Answer 3

The function of earth the wire is in the event of a fault to provide a low resistant pathway to the ground for the current.

Question 4

What is the function of step-up transformers?

Answer 4

The function of step-up transformer is to increase the voltage as the electricity flows through the cables.

Question 5

What is the function of step-down transformers?

Answer 5

Decrease the voltage to make it safe to use.

Question 6

What’s another name for potential difference? (PD)

Answer 6

Another name for potential difference (PD) is voltage (V).

Question 7

What’s another name for voltage? (V)

Answer 7

Another name for voltage is potential difference (PD).

Question 8

What is an AC? (alternating current)

Answer 8

An alternating current is a current that is constantly changing direction.

Question 9

What is a DC? (direct current)

Answer 9

A direct current only flows in one direction and is supplied by batteries.

Question 10

What is the UK mains supply voltage/potential difference? And what it’s frequency?

Answer 10

The voltage of the UK mains supply is 230V and the frequency is 50 hertz.