force between two point charges kept at a distance d apart in air is F.if these charges are kept at the same distance in water,how does the force between them change
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If two charges are kept in a medium, then the force between themdecreases by factor of relative permittivity of medium. Relative permittivity of water is 80. So, theforce between the two charges willdecrease by 80 times. Hence, newforce will be f/80.
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