Electricity

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What is the frequency of UK mains electricity supply?
230 V
1 of 9
Which of the live, neutral or earth wires is always at 0 volts?
Neutral
2 of 9
Why is the case of a plug usually made out of plastic?
It's a good insulator, so the electricity keeps flowing where it should be
3 of 9
Appliances with double insulation don't need which wire?
Earth wire
4 of 9
What energy transformation occurs when electric current flows through a resistor?
Electrical to heat
5 of 9
What is the equation linking Q, V and E?
E = Q x V
6 of 9
What colour is the live wire?
Brown
7 of 9
What colour is the neutral wire?
Blue
8 of 9
Which two colours are the earth wire?
Green and yellow
9 of 9

Other cards in this set

Card 2

Front

Which of the live, neutral or earth wires is always at 0 volts?

Back

Neutral

Card 3

Front

Why is the case of a plug usually made out of plastic?

Back

Preview of the front of card 3

Card 4

Front

Appliances with double insulation don't need which wire?

Back

Preview of the front of card 4

Card 5

Front

What energy transformation occurs when electric current flows through a resistor?

Back

Preview of the front of card 5
View more cards

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