Electric circuits and fields > electricity

The Van de Graaff generator never fails to inspire.

A demonstration of the principle of electrostatic precipitation.

Charged materials exert forces on each other which might be attractive or repelling. The closer the materials, the larger the forces.

This is a model of an historic instrument which can still be used to compare or measure charges.

Electrostatic induction is a quick way of using a charged object to give something a charge, of the opposite sign, without losing any of the original charge.

These experiments could be used at the same time as elementary experiments with charged rods and polystyrene balls. Or, they could be used as revision experiments before a more advanced look at electrostatics.

To illustrate the dangers associated with transferring fuel.

A shuttling ping-pong ball serves as a model of ions moving in an electric field.