Question

A spherical shell of radius R has a charge +9
units.
The electric field due to the shell at a point
(a) inside is zero and varies as r 1 outside it
(b) inside is constant and varies as r-2 outside it
(c) inside is zero and varies as r-2 outside it
(d) inside is constant and varies as r-1 outside it​

Answer 1

Answer:

correct answer is C

electric field inside the shell = 0

electric field at the surface of the shell =q/4π€ R2

electric field outside the shell = q/4π€r2

so electric field outside the shell varies as r-2

hope this answer help u