Write the uses of magnet .

Explanation

Uses of magnets
(i) The directive property of magnets is used in the construction of a magnetic needle and magnetic compass
(ii) Permanent magnets are used in dynamos, electric motors, generators, electron accelera tors, door locks, etc.
(iii) Electromagnets are used widely in electric bells, electric cranes, etc.
(iv) Magnets are used in separating iron particles from solid mixtures using the method of mag netic separation.
(v) Magnetic resonance imagery (MRI) technique, which diagnoses diseases uses the principle of magnetism.
(vi) Magnetic trains travel just above the rails due to magnetic levitation. The average speed of the maglev trains is around 500 km h- and they travel without making much noise.