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Electromagnets

What must hap...

Question

What must happen for an electromagnet to have a magnetic field?

A

It must be heated.

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B

It must be touching another magnet.

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C

It must be lined up with earth's magnetic field.

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D

It must be connected to an electrical source.

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Solution

The correct option is D It must be connected to an electrical source.
Electromagnets are temporary magnets that have the property of a magnetic only when they are connected to an electrical source.

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