Electricity and magnetism are two branches of physics that are closely related. Electricity is the flow of electric charge through wires and other materials, and it is the basis for many everyday devices, like lights, TVs, and computers. Magnetism is a force that attracts or repels certain materials, like iron or steel. Both electricity and magnetism are caused by the movement of charged particles, like electrons. In fact, an electric current flowing through a wire creates a magnetic field, and a magnetic field can be used to create an electric current in a wire.