Magnetism is the force exerted by magnets when they attract or repel each other. Magnetism is caused by the motion of electric charges. Every substance is made up of tiny units called atoms. In substances such as iron, cobalt, and nickel, most of the electrons spin in the same direction.Magnetism kits Manufacturers, Magnetism kits, Magnetism kits Exporters in India, Magnetism kits Manufacturers in India .