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A system consists of two concentric sph...

A system consists of two concentric spheres, with the inside sphere of radius a carrying a positive charge `q_(1)`. What charge `q_(2)` has to be diposited on the outsie sphere of radius `b` to reduce the potentail `varphi` depend in this case on a distance `r` from the centre of the system ? Draw teh appoximate plot of this dependence.

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