Question

Which of the following is not true about the electric field intensity \vec{E} of a uniformly charged solid sphere?

a {E} is maximum at the surface of the sphere
b E} is directly proportional to the distance from the centre of the sphere
c {E} decreases as a square of the distance from the surface of the sphere
d {E} decreases as a square of the distance from the centre of the sphere.

Answer 1

Have you plotted E(r)? Answer should be clear.

Answer 2

i dont get you @Vincent-Lyon.Fr

Answer 3

@Diwakar so what is the answer to the question

Answer 4

Electric field varies linearly upto radius R and varies as 1/r^2 outside the sphere.
So option D saying "field decreases as square of distance from the center" is incorrect.