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QUESTION 1

Why are electromagnets used in metal scrap yards?




They are weak permanent magnets.

They are temporary magnets, so eventually the metal just falls off.

They are very powerful permanent magnets.

They are temporary magnets, so they can be turned on and off.

User YnkDK
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1 Answer

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They are temporary magnets so they can be turned on and off
User Noman Ur Rehman
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