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Electric current is caused by moving electric charges. The effects of charge and electric fields can be investigated by looking at the forces they exert on conductors and insulators.

Learn about simple electric circuits and the symbols used to show their different components.

Learn how to calculate resistance in an electrical circuit and how resistance depends on the length of conductor.

Electricity is an essential part of our daily lives. In our homes, we use it for lighting, heating and using appliances - but how is electric power converted into other forms of energy and how is this measured?

Learn about how we can protect ourselves from electric shock.