Physics-P5-(MAINS ELECTRICITY) Flashcards
1
Q
What is the mains electricity in the Uk (in volts)
A
230V
2
Q
How many wires are in the mains cable
A
3
3
Q
What are the wires called
A
Earth, neutral, live
4
Q
What do they do
A
- the earth (yellow and green)- is the safe wire that carries no current
- the neutral wire (blue) carries the current AWAY from the appliance
- the live wire (brown) carries the current TO the appliance
5
Q
What are the dangers of mains electricity
A
-touching a live wire - large potential difference flows through the body
- damaged cables
- a connection between the earth and the live wire