mains electricity

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The UK mains electricity supply is about 230V - and it can kill if it is not used safely.

Electrical circuits, cables, plugs and appliances are designed to reduce the chances of receiving an electric shock.

The more electrical energy used, the greater the cost.

Electrical supplies can be direct current (d.c.) or alternating current (a.c.).

Wiring a plug
Earthing and double insulation
Fuses and circuit breakers
Electical power
Direct current and alternating current
Energy in circuits
Mains electricity test
Long section on mains electricity

 

[ This page has been adapted from www.bbc.co.uk/schools/gcsebitesize/science ]