Question

Electromagnets are created using charged and insulated wire wrapped around a piece of iron. uncharged and insulated wire wrapped around a piece of iron. insulated wire wrapped around a piece of plastic. charged and uninsulated wire wrapped around a piece of steel.

Answer 1

I think the correct answer would be charged and insulated wire wrapped around a piece of iron. The charge in the wire would make magnetic fields through the aid of the magnetic properties of iron. Hope this helps. Have a nice day.