Why are temporary magnets so useful?

1 Answer
L.Shane John Paul N.
May 16, 2016

Temporary magnets are useful in many ways.

Explanation:

For example,

 temporary magnets (basically, electromagnets) are used in cranes  to lift magnetic objects and shift their position. If it was a permanent magnet, the magnetic object couldn't be detached from the crane.

Similarly, they are used in many ways.

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