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Electrical Terms

Electricity is defined as the movement of electrons in a conductor. Copper is a well known conductor. Electrons orbit the nucleus of an atom much like the moon goes around the earth. Electricity flows through a conductor, which is usually in the form of a wire covered by an insulator. An insulator, such as plastic, is something that restricts the flow of electrons. Before discussing the electrical system, you need to be able to identify and describe three main terms: