An electromagnets different from a permanent magnets because an electromagnet blank whats the blank?

asked Mar 20, 2019 171k views

5 votes

An electromagnets different from a permanent magnets because an electromagnet blank

whats the blank?

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3 votes

An electromagnet can be turned on or turned off which makes it useful for construction purposes to lift heavy metal objects.

Trixo answered Mar 27, 2019

by Trixo

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