A hollow dielectric sphere has inner and outer radii of `R_1` and `R_2` respectively. The total charge carried by the sphere is +Q, this charge being uniformly distributed through out the dielectric sphere between `R_1` and `R_2`.

Options

A. The electric field for `R_1ltrltR_2` is given by `Q/(4piin_0r_2).(R_2^3-R_1^3)/(r^3-R_1^3)`
B. The electric field for `R_1ltrltR_2` is given by `Q/(4piin_0r_2).(r^3-R_1^3)/(R_2^3-R_1^3)`
C. the electric field for `rgtR_2` is given by `Q/(4piin_0R_2^2)r^3/R_1^3`
D. the electric field for `rltR_1` is `Q/(4piin_0r^2)`