Quiz for course

Electric current is measured in

• kWh

• Amps

• Ohms

• Watts

Answer explanation

Electric current is measured in Amps, which is the correct choice for this question.

Electric power is measured in

• kWh

• Amps

• Ohms

• Watts

Answer explanation

Electric power is measured in Watts, making it the correct choice among the options provided.

This is the circuit symbol of a

• resistor

• battery

• fuse

• switch

• an earth wire

Answer explanation

The circuit symbol shown represents a fuse, which is used to protect electrical circuits from overcurrent. It is not a resistor, battery, switch, or an earth wire.

If a bulb uses 10A, which fuse would be best?

• 10A

• 13A

• 8A

• 5A

Answer explanation

Since the bulb uses 10A, it is recommended to use a fuse slightly higher than the bulb's current to prevent blowing the fuse. Therefore, the best choice would be a 13A fuse.

The fuse in a circuit melts when:

• An appliance isn't earthed

• Too much current flows

• Too much voltage flows

Answer explanation

The fuse in a circuit melts when too much current flows, not when an appliance isn't earthed or when too much voltage flows.

Why are damp conditions dangerous around electricity? Tick all that apply.

• Water is a conductor

• You could get electrocuted

• It can damage the insulation

• It could cause the fuse to blow

Answer explanation

Damp conditions are dangerous around electricity because water is a conductor and can lead to electrocution.

Why are overheating cables a hazard?

• Could cause a fire

• Could cause a electrocution

• Could cause a shortcircuit

• Could melt the fuse

Answer explanation

Overheating cables can lead to a fire hazard due to the risk of igniting surrounding materials.

What's wrong with this plug?

• The wires are uninsulated

• The wires are attached in the wrong places

• There is no fuse

• The cable is not under the cable grip

• The case is broken

Answer explanation

The wires are uninsulated because they lack protective covering, posing a safety hazard.

What's wrong with this plug?

• The wires are uninsulated

• The wires are attached in the wrong places

• There is no fuse

• The cable is not under the cable grip

• The case is broken

Answer explanation

The wires are attached in the wrong places

What's wrong with this plug?

• The wires are uninsulated

• The wires are attached in the wrong places

• There is no fuse

• The cable is not under the cable grip

• The case is broken

Answer explanation

The case is broken