User talk:Surengedar

Magnet : substance that attracts of iron and steel is called a magnet and this property of the material is called magnetism.

Type of artificial magnets. the most usual way of making an artificial magnet is by passing electric current through a wire wound over an iron or steel bar. depending upon thee ability to retain magnetism, artificial magnets are classified as permanent and temporary magnet. Permanent magnet : hardened steel and certain magnetic alloys ( e.g cobalt ,steel ,tungsten steel ) when magnetized retain their  magnetism over an extended period of time. in spite of their name, permanent magnet can lose their magnetism if subjected to severe mechanical shock or heating. permanent magnet are extensively application in electrical instruments, earphones , moving -coil loudspeakers etc.

Temporary magnets : Iron or soft will retain magnetism so long as the the magnetized force is applied. once the magnetized force is removed, they will lose nearly all their magnetism. magnets made from materials are called.