Question

A spherically charge distribution is characterised bya a change in

Answer 1

$answer$

density having the following variation :
ρ(r)=ρ0(1−rR)forr<Rρ(r)=ρ0(1−rR)forr<R
ρ(r)=0r≥Rρ(r)=0r≥R
where r is the distance from the center of the charge distribution and ρ0ρ0 is a constant .The electric field at an internal point (r<R)(r<R) is :

(a)ρ04∈0(r3−r24R)(b)ρ0∈0(r3−r24R)(c)ρ03∈0(r3−r24R)(d)ρ012∈0(r3−r24R)