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The hysteresis cycle curve for the material of a permanent magnet is:

1. short and wide
2. tall and narrow
3. tall and wide
4. short and narrow

Correct answer: tall and wide

Solution

A permanent magnet should be hard to demagnetize, so it has a large coercive force, making the hysteresis loop wide. It should also retain a strong magnetization, giving a large remanence, which makes the loop tall.

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