Prove me that spherical drivers capacitance it's radius of 4pe times there is​

The capacitance of a single spherical conductor means that we imagine a spherical shell of infinite radius surrounding the first conductor.

as generally capacitance for two conducting concentratic sphere ,

C=4πϵ

0

a

1

−

b

1

1

, here b is infinity so ,C=4πϵ

0

a

In this case capacitance will be ,C=4πϵ

0

r

So, C∝r