MAGNETS
*Magnets.
Magnets are of two types (1) Natural magnets and (2) Artificial magnets, Natural magnets are generally irregular in shape and weak in strength .on the other hand , artificial magnets have desired shape and desired strength .A bar magnet ,a horseshoe magnet,compass needle etc. all are artificial magnets
*properties of Magnet
(a) Attractive property . A magnet can attract magnetic substance like iron,steel,Cobalt,etc.
(b) Directive property.
(c) Unlike poles attract and like poles repel.
(d) Magnetic poles exist in pairs .
(e)Force between two Magnetic poles obeys inverse square law.