ABSTRACT
The history of magnetism was dated to earlier than 600 B.C., but it is only in the twentieth century that scientists have begun to understand it and develop technologies based on this understanding. The ancient Greeks were the first known to have used the mineral magnetite, which they called a magnet because of its ability to attract other pieces of the same material and iron. Magnets are divided into two types according to the composition method, namely, natural and artificial magnets. Magnets are widely used in power generation, transmission, and transmission systems. They are the basis for the work of the electrical stations that convert mechanical energy to electrical power. Some specialized devices are used to detect the lines of magnetic forces that can be sensed or influenced. A magnetic field is induced when an electric current pass through a conductor, and the generated magnetic field line will be and directed to the direction of current passing through the conductor.
