We experience a sensation of an electric shock either while opening the door of a car or holding the iron bar of a bus after sliding from our seat. The reason for these experiences is discharge of electric charges through our body, which were accumulated due to rubbing of insulating surfaces.this is due to generation of static electricity.Static means any thing that does not move or change with time. Electrostatics deals with the study of forces, fields and potentials arising from static charges.
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