ABSTRACT

All matter is made up of atoms or groups of atoms bonded together in a particular way. Within the nucleus there are protons which are positively charged and neutrons which, as their name implies, are electrically neutral and have no charge. The effects of electric current flow can be detected by the presence of one or more of the following effects: light, heat, magnetism, chemical, pressure and friction. Light is produced when an electric current flows through the thin filament wire in the evacuated bulb of an electric lamp. Electric charge is also present in the natural world and anyone who has experienced an electrical storm cannot fail to have been awed by its effects. The electrical characteristics of an inductor are determined by a number of factors including the material of the core, the number of turns, and the physical dimensions of the coil.