[question number = 01.4] Drag and drop to match the purpose with the correct wire

Connects the appliance to the power supply
Provides an alternative (low resistance) path for the current in the case of a fault
Provides a return path to the power supply from the appliance

What is an electrical fault?

What is the purpose of fuses and circuit breakers?

They detect potentially dangerous changes in current and disconnect the power supply
They act as a backup source of power in the case of a sudden, momentary loss of power
They hold the wires in place in a plug
They stop electromagnetic interference between rooms

Which component is described: A glass tube with a thin wire inside that melts if too much current passes through it, breaking the circuit.

Which of the following is a difference between circuit breakers and fuses?

Fuses are single-use, circuit breakers are multi-use
Fuses are more effective than circuit breakers
Fuses are multi-use, circuit breakers are single-use
Fuses are used to turn on circuits, circuit breakers are used to turn off circuits

Switches are both a functional and a safety component of a circuit. Complete the sentence: When switches are closed, no flows around a circuit.

Match the voltage with the correct wire

Why is it dangerous to connect a live and earth wire?

A very large current will flow which could start a fire from excess heat
When unused the neutral wire will melt and cause a fire
The earth wire is connected to your neighbours and they will experience a power surge
Earth and live wires usually explode when they touch

[question number = 01.1] Use one of the following numbers to fill in the blank:
110, 12, 24, 230

Complete the sentence: In the UK the domestic electricity supply has a frequency of Hz and is about V.

Electrical Safety Quiz

Good Luck!

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