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Let P(r)=(Q)/(piR^4)r be the charge dens...

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:

A

`(Q)/(4 pi in_(0) r_(1)^(2))`

B

`(Qr_(1)^(2))/(4 pi in _(0) R^(4))`

C

`(Qr_(1)^(2))/(3 pi in_(0) R^(4))`

D

0

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The correct Answer is:
B
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