Homework Help: Charge on the surface of a conducting sphere.

1. Feb 8, 2010

123xx

I need to find the charge and charge density on the surface of a conducting sphere of radius r=0.15m and of a potential of V=200V.

I know the surface charge density, which is Q/A. The surface area is 0.28274, but I can't find the charge.

2. Feb 9, 2010

rl.bhat

Potential of a spherical conductor is
V = (1/4πεο)*Q/R.
Find Q, then surface charge density.