A sphere of radius `R` has a uniform distribution of electric charge in its volume. At a distance `x` from its centre, for `x lt R`, the electric field is directly proportional to

A solid sphere of radius R has a volume charge density rho=rho_(0) r^(2) (where rho_(0) is a constant ans r is the distance from centre). At a distance x from its centre (for x lt R ), the electric field is directly proportional to :

A sphere of radius R has a charge density sigma . The electric intensity at a point at a distance r from its centre is

A small circular ring has a uniform charge distribution. On a far-off axial point distance x from the centre of the ring, the electric field is proportional to-

The electric field due to a dipole at a distnce r from its centre is proportional to

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

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