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Essay / Research Paper Abstract
This 3 page paper examines how alternators, electric motors and transformers all make use of magnetism, but each uses it in a different way. The paper explains how magnetism is used along with the principles behind it in each of these tools. The bibliography cites 4 sources.
Page Count:
3 pages (~225 words per page)
File: TS14_TEmagnit.rtf
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Unformatted sample text from the term paper:
similar the way magnetism is used is different in each. An alternator is also known as a alternating current generator, as this is the functions serves, producing an electrical current.
It was the concept underlying this that was discovered by Michael Faraday and Joseph Henry in the nineteenth century. If we consider a common use, such as a car battery
we can demonstrate how an alternator makes use of magnetism (Jefimenko, 1989). In a car there is the need for the battery to be feed power otherwise it will
go flat. The alternator provided the power to charge the battery. Using magnesium it will produce voltage and current, the magnet, referred to as a rotor, is turned inside
a stator; this is a fixed loop conductor (Jefimenko, 1989). The conductors are usually motionless, held in place within the frame of the alternator, the field coils are wound around
a shaft. This movement will create voltage, the level of the voltage and its polarity are detained by the strength of the magnetic
field used, the rotation direction and speed and the number of conductors (Haldex , 1999, Jefimenko, 1989). The way that an electric motor makes use of magnetism is
different, instead of using to create voltage, as was the case seen with the alternator, the electric motor will use ,magnetism to convert electrical energy into mechanical energy (Purcell, 1984).
This time there is an electric magnet that is place on a shaft where it is free to rotate. The electro magnet is fixed in place permanently and cannot
move. The electro magnet has an alternating current though it. If electrical energy is changed into mechanical energy there has to be an input of that energy, this is where
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