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Unformatted text preview: ends? Well, when we try it, two smaller, identical magnets are produced, shown below. Again, the north or south end of a magnet cannot be isolated. Figure %: a) A permanent magnet, with a north and south pole, is broken up into two pieces in b). Each piece becomes its own permanent magnet, with north and south poles Even though we cannot describe quantitatively the field of a permanent magnet, we can show its shape: Figure %: The field of a permanent magnet The field lines always point away from the north end, and toward the south end, in a shape similar to the electric field between two oppositely charged particles. As we will see, this field is quite similar to the field created by a coil of wire with a current running through it (see solenoid ). Permanent magnets are often used to create magnetic fields; these magnets are usually oriented in a manner that causes a uniform field, so we do not have to concern ourselves too much with their field shape....
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- Fall '10