Why don’t all magnets have this ability? Is it based on the material? If a magnet is turned off, is it that the material is demagnetized somehow and then magnetized again?
In: Engineering
Electromagnets can be turned on and off by adding current/electricity. Natural magnets cannot be turned on and off.
[https://en.wikipedia.org/wiki/Electromagnet](https://en.wikipedia.org/wiki/Electromagnet)
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