Electromagnetism in Use Quick Check

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Question
An electromagnet is the most powerful type of magnet there is. It is a magnet with a current running through it that can be turned on and off. Why might it be useful to be able to turn the electromagnet on and off?(1 point)
Responses

to latch onto and let go of objects
to latch onto and let go of objects

to control the strength of the magnet
to control the strength of the magnet

to not waste electricity
to not waste electricity

to reduce wearing out of the magnet over time
to reduce wearing out of the magnet over time

1 answer

to control the strength of the magnet
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