GCSE Physics

Generating Electricity

Where electricity comes from is clearly important: without generators there would be no mains supply.

If a magnet is pushed into a coil of wire, such as the one below, attached to a sensitive ammeter, the needle is seen to move. This means the magnet pushes the free electrons around the circuit as a current.

North pole of bar magnet being pushed into a coil of wire attached to a sensitive ammeter

However, once the magnet's motion stops, the needle returns to zero.

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