An electromagnet's a type of magnet in which the magnetic field's produced by the flow of electric current. The magnetic field disappears when the current ceases. Introduction A wire with an electric current passing through it, generates a magnetic field around it, this's a simple electromagnet. The strength of magnetic field generated's proportional to the amount of current. In order to concentrate the magnetic field generated by a wire, it's commonly wound into a coil, where many turns of w… (More on Electromagnet)