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By Noel M. Morris (auth.)

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Electrolysis is the basis of the electroplating industry in which one metal is plated with another metal. It is also used in the extraction and reiming industry; copper, zinc and aluminium being examples of metals extracted by this means. 1 electrolysis + cathode anode electrolyte - - 16 and oxygen can be produced by breaking down water into its basic chemical constituents. 4 AN EXAMPLE OF ELECTROLYSIS To simplify the representation of ions in chemical processes, a form of shorthand is used to denote different types of ion.

F. c. motor which depends for its operation on a 'rotating' or 'moving' magnetic field inductive reactance The opposition of a pure inductance to the flow of aiterating current; no power is dissipated in an inductive reactance; symbol XL, measured in ohns inductor A piece of apparatus having the property of inductance instrument transformer A transfonner designed to connect an electrical instrument either to a high voltage (a voltage transformer, VT, or potential transformer, PT) or to a high current (a current transformer, CT) insulator A material which has a very high resistance to the flow of electrical current.

All these electrochemical effects depend on the electrolyte. The majority of pure liquids are good insulators (for example, pure water is a good insulator), but liquids containing salts will conduct electricity. You should also note that some liquids such as mercury (which is a liquid metal) are good conductors. 2 IONS An atom has a nucleus (positively charged) surrounded by electrons (negatively charged) which orbit around the nucleus in shells or layers. In an electrically neutral atom, the positive and negative charges are equal to one another and cancel out.

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