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Electrostatics question

2009 · Shift 0 · Q63

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JEE Main
Physics
Electrostatics
2009 · Shift 0 · Q63

Electrostatics question

2009 · Shift 0 · Q63

JEE MainPhysicsElectrostaticsMCQ+4 / −1

Let

P\left( r \right) = {Q \over {\pi {R^4}}}r

be the change 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 center of the sphere, the magnitude of electric field is :

A
${Q \over {4\pi \,{ \in _0}\,r_1^2}}$
B
${{Qr_1^2} \over {4\pi \,{ \in _0}\,{R^4}}}$
C
${{Qr_1^2} \over {3\pi \,{ \in _0}\,{R^4}}}$
D
$0$

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