Awire is wrapped around a piece of iron, and then electricity is run through the wire. what happens to the iron?

Search ResultsBy simply wrapping wire that has an electrical current running through it around a nail, you can make an electromagnet. When the electric current moves through a wire, it makes a magnetic field. ... You can make a temporary magnet by stroking apiece of iron or steel (such as a needle) along with a permanent magnet.

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The answer is that they are composed mostly of liquid water.