Mains electricity (AQA GCSE Physics Combined Science): Flashcards
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Practise the cards
15 cards from this deck
UK mains electricity voltage & type
UK mains electricity voltage & type
AC
AC (alternating current) definition
AC (alternating current) definition
Current direction changes many times per second
Live wire colour
Live wire colour
Brown
Live wire function
Live wire function
Carries electrical supply to appliance
Live wire potential difference
Live wire potential difference
Neutral wire colour
Neutral wire colour
Blue
Neutral wire function
Neutral wire function
Completes the electrical circuit
Neutral wire potential difference
Neutral wire potential difference
Earth wire colour
Earth wire colour
Yellow and green
Earth wire purpose
Earth wire purpose
Safety feature to protect from electrocution
Does earth wire normally carry current?
Does earth wire normally carry current?
No - not part of main circuit
Why is the live wire always dangerous?
Why is the live wire always dangerous?
Carries even when appliance switched off
What melts when large current flows in earth wire?
What melts when large current flows in earth wire?
The fuse