Fuses and plugs

Electric current is measured in

• kWh

• Amps

• Ohms

• Watts

This is the circuit symbol for ...

• an AC current source
• a DC current source
• an ammeter
• a voltmeter

This is the circuit symbol for ...

• an AC current source
• a DC current source
• an ammeter
• a voltmeter

This is the circuit symbol of a

• resistor

• battery

• fuse

• switch

• an earth wire

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

• 10A

• 13A

• 8A

• 5A

Resistance in wire depends on how thick it is, how long it is and what it is made of.

• true
• false

The fuse in a circuit melts when:

• An appliance isn't earthed
• Too much current flows
• Too much voltage flows

Where is the Earth wire connected to?

• The Live wire

• The casing

• The neutral wire

• The fuse

Why are overheating cables a hazard?

• Could cause a fire

• Could cause a electrocution

• Could cause a shortcircuit

• Could melt the fuse

Fuse/circuit breaker should be set to a current value just above the normal operating current. True or false

• True

• False