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Two point charges having equal charges separated by 1 m distance experience a force of 8 N. what will be the force experienced by them . If they are held in water at the same distance?
(Given ` :K_("water") =80 ) `

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In freee space force between two equal point charges separated by 1m is , F =8 N.
` therefore " "F_("water") =(F)/(K_("water")) =(8N)/(80 ) =0.1 N `
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