A solid sphere of radius `R` has total charge `2Q` and volume charge density `p=kr` where `r`
Channel: Doubtnut
Date: 03/01/2020

A solid sphere of radius `R` has total charge `2Q` and volume charge density `p=kr` where `r` is distance from centre. Now charges `Q` and `-Q` are placed diametrically opposite at distance `2a` where a is distance form centre of sphere such that net force on charge `Q` is zero then relation between a and `R` is