The capacitance `(C )` for an isolated conducting sphere of radius `(a)` is given by
Channel: Doubtnut
Date: 2020-08-02

The capacitance `(C )` for an isolated conducting sphere of radius `(a)` is given by `4pi epsilon_(0)a`. If the sphere is enclosed with an earthed concentric sphere. The ratio of the radii of the sphere being `(n)/((n-1))` then the capacitance of such a sphere will be increased by a factor