PhysicsMedium46×since 2002Q6955Let P(r)=QπR4rP\left( r \right) = {Q \over {\pi {R^4}}}rP(r)=πR4Qr be the change density distribution for a solid sphere of radius RRR and total charge QQQ. For a point ′p′'p'′p′ inside the sphere at distance r1{r_1}r1 from the center of the sphere, the magnitude of electric field is :AQ4π ∈0 r12{Q \over {4\pi \,{ \in _0}\,r_1^2}}4π∈0r12QBQr124π ∈0 R4{{Qr_1^2} \over {4\pi \,{ \in _0}\,{R^4}}}4π∈0R4Qr12CQr123π ∈0 R4{{Qr_1^2} \over {3\pi \,{ \in _0}\,{R^4}}}3π∈0R4Qr12D000Check answerSkip