Practical Electricity - 3-pin plug

Most electrical appliances are connected to the mains using _____________.

• green and yellow stripes

• a large electric current

• a cable with 3 coloured wires

• an open switch

The ________________ covering each wire is colour coded for easy identification.

• 0 V

• insulation

• large electric current

• neutral wire

The live wire is covered with _____________ insulation.

• blue

• brown

• green and yellow stripes

• fire

The neutral wire is covered with _____________ insulation.

• blue

• brown

• green and yellow stripes

• water

The earth wire is covered with insulation coloured in ________________.

• blue

• brown

• green and yellow stripes

• water

The ___________ wire is connected to a high voltage of 240 V.

• earth

• live

• neutral

• danger

The ___________ wire is at 0 V and completes the circuit by providing a returning path to the supply.

• earth

• live

• neutral

• common

The ___________ wire is a safety wire to stop the appliance becoming live.

• earth

• live

• neutral

• safe

What is the reason why the live wire is still dangerous even when the switch is open?

• The live wire has current flowing through all the time.

• The live wire is exposed.

• The live wire has a high potential difference of 230 to 240 V.

• The live wire is hot.

The earth wire only carries a current when there is a __________ in the appliance.

• fire

• fault

• large electric current

• insulation