Let `P(r)=(Q)/(piR^4)r` be the charge density distribution for a solid sphere of radius R and total charge Q. For a point 'p' inside the sphere at distance `r_1` from the centre of the sphere, the magnitude of electric field is:

Options

A. ZERO
B. `(Q)/(4piepsilon_(0)r_(1)^(2))`
C. `(Qr_(1)^(2))/(4piepsilon_(0)R^(4))`
D. `(Qr_(1)^(2))/(3piepsilon_(0)R^(4))`

Answer

C