Question

The surface density on a copper sphere is `sigma`. The electric field strength on the surface of the sphere is
A. `sigma`
B. `sigma//2`
C. `sigma//2epsilon_0`
D. `sigma//epsilon_0`

Answer 1

Correct Answer - D
d. Electric field at any point near the surface of an arbitary
conductor is `E = sigma//epsilon_0` where `sigma` is the surface
change density at that point.