Magnets can introduce electric currents, and electric currents can cause magnetic lines of force.
Based on this statement, there is obviously a close relationship between electricity and magnetism. Electric current flowing in a wire creates a magnetic field around it. This magnetic force is evidence of the phenomena known as electromagnetism. The following activities will show the relationship between electricity and magnetism. They will show how the changes in the earth's magnetic field can affect the flow, and sometimes interupt the flow, of electricity from power company to consumer.