Need help with an E&M physics question.?

Question

Consider a charged metallic spherical shell of radius a=1.75cm. The potential at distance of r=6 cm from the center of teh shell is measured to be 1.5kV. What is the charge on the shell? Calculate the potential on the surface of the shell.

Can I just use the equation V=KQ/r or is there more to that?

Answer 1

Nope, there's really nothing more to it than that. (Except that it's KQ/r² and not r ☺) The charge will equalize itself around the outside of the sphere and 'act' as if it were concentrated at the point in the middle of the sphere.

HTH

Doug