Let $\rho (r) =\frac{Q}{{\pi {R^4}}}r$ 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
Let $\rho (r) =\frac{Q}{{\pi {R^4}}}r$ 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
- [AIEEE 2009]
- A
$0$
- B
$\frac{Q}{{4\pi {\varepsilon _0}{r_1}^2}}$
- C
$\;\frac{Q}{{4\pi {\varepsilon _0}{R^4}}}$
- D
$\;\frac{{Q{r_1}^2}}{{3\pi {\varepsilon _0}{R^4}}}$
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