AQA GCSE Physics - Mains Electricity

What is the voltage of mains electricity in the UK?

• 120 V

• 220 V

• 230 V

• None of these

What is the frequency of mains alternating current in the UK?

• 60 Hz

• 50 Hz

• 230 V

• 120 V

What type of current is used in mains electricity

• appealing current

• diverting current

• alternating current

• direct current

A _________ is a component that melts when too much current passes through it.

• fuse

• breaker

• circuit

• panel

Which wire is connected to a fuse in a UK plug?

• Live

• Neutral

• Earth

• Positive

What material are the pins made from in a UK plug?

• Aluminium

• Copper

• Iron

• Brass

Which one is a fuse?

• 
• 
• 
• 

Which one is the live wire?

• Brown. Provides the alternating potential difference

• Blue. Completes the circuit and carries away current

• Green and Yellow. Only carries current when there is a fault

What colour is the earth wire?

• brown - it provides the alternating potential difference

• blue - it completes the circuit and remains at about 0 V

• green and yellow - it only carries current when there is a fault

The electricity in our houses is at 230 V. What kind of circuit allows all the houses to be at the same potential difference?

• Series

• Consecutive

• Parallel

• Perpendicular