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Electricity

Mains Electricity.

The electricity which comes into your house
through the wall sockets (called Mains Electricity)
is different from the electricity which comes from cells
in two important ways.

1.  It is alternating current (a.c.)

2.  It is at a much higher voltage (it can kill you!).
Mains electricity in the UK is supplied at 240 Volts,
in the USA it is 110 Volts.
A cell or battery is typically 1·5 to 12 Volts,
which is much less dangerous.

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