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Which statement is true of magnets?
A. A magnet always has two poles.
B. Earth is a permanent magnet. C. Electromagnets always have the same strength.
D. Electromagnets are generally weaker than permanent magnets.

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Respuesta :

A. A magnet always has two poles
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Answer:

Option A

Explanation:

A magnet has always two poles.

1) North Pole

2) South Pole

However,

=> Earth is a temporary magnet.

=> Electromagnets don't have the same strength.

=> Permanent magnets are weaker than electromagnets.

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