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Earth's Magnetism

Permanent mag...

Question

Permanent magnets are the substances having the property of

A

ferromagnetism at room temperature for a long period of time.

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B

paramagnetism at room temperature for a long period of time.

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C

antiferromagnetism at room temperature for a long period of time.

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D

diamagnetism at room temperature for a long period of time.

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Solution

The correct option is A ferromagnetism at room temperature for a long period of time.
Permanent magnets are those substances that retain their ferromagnetic property for a long period of time at room temperature.

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