A metal sphere of radius 32 cm has a net charge of 3.0 multiply.gif 10-8 C.
(a) What is the electric field at the sphere's surface?
N/C
(b) If V = 0 at infinity, what is the electric potential at the sphere's surface?
V
(c) At what distance from the sphere's surface has the electric potential decreased by 150 V?
m