A hallow metal sphere of radius R is uniformly charged. The electric field due to the sphere at a distance r from the centre:

Options

A. Decreases as r increases for r gt R and r gt R
B. Increases as r increases for r lt R and r gt R
C. Zero as r increases for r lt R , decreases as r increases for r gt R
D. Zero as r increases for r lt R , increases as r increases for r gt R

Answer

C

Explanation

For hollow conducting sphere
For `r lt R , E =0`
For `rgtR , E=(Kq)/r^2` so E decreases.