MAGNETISM
Basic Electrical Theory
In magnetic materials, the atoms have certain areas called domains. These domains are aligned
such that their electrons tend to spin in the same direction (Figure 19).
Figure 19 Magnetic Domains
The alignment of these domains results in the formation of magnetic poles at each end of the
magnet. These poles are called the north pole and the south pole. The law of magnetism states
that like magnetic poles repel and unlike magnetic poles attract one another (Figure 20).
Figure 20 The Law of Magnetic Attraction
and Repulsion
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