Conisder a thin spherical shell of radius R with centre at the origin, carrying uniform poistive surface charge denisty. The variation of the magnitude of the electric field `|vecE(r)|` and the electric potential V(r) with the distance r from the centre, is best represented by which graph?

Options

A.
B.
C.
D.

Answer

D

Explanation

As is known from theory,inside a uniform spherical surface charge distibutiaon, electric field, `vec(E) = 0` and electric potential `V` = constant.
At points outside the charge distribution,
`E prop (1)/(r^(2))` and `V prop (1)/( r)`
Choice (d) is correct.