Question

explain the method of preparing electromagnetic how do you prefer of an electromagnetic with help of magnet compounds ​

Answer 1

Answer:

It is fairly easy to build an electromagnet. All you need to do is wrap some insulated copper wire around an iron core. If you attach a battery to the wire, an electric current will begin to flow and the iron core will become magnetized. When the battery is disconnected, the iron core will lose its magnetism.