What magnetic material should the iron core of an electromagnet use? Why?
Iron is a soft magnetic material. When there is no external magnetic field, magnetism will soon disappear, and a power will have a magnetic field, and other materials do not become as fast as iron. So iron is used as the core.
One of the characteristics of the electromagnet, the magnetic control, that is to say they want to have a magnetic, will disappear to disappear, the electromagnet is composed of magnetic solenoid provided, when no current is always not magnetic.
