Question of the Day ~ Fundamentals of Physics

Tuesday, 27 December 2011

08:18 Vijaykumar 2 comments

The capacitance of two oppositely charged metal spheres of same radius when far apart will be equal to

[a]2C [b]C/2

[c]C/4 [d]4C

Ans is c/2

use

v+=+q/4*pi*ebs.r
v-=-q/4*pi*ebs.r

dv=v+-v-

c=q/dv
ans is (b)