If an insulated non-conducting sphere of radius $R$ has charge density $\rho .$ The electric field at a distance $r$ from the centre of sphere $(r < R)$ will be
If an insulated non-conducting sphere of radius $R$ has charge density $\rho .$ The electric field at a distance $r$ from the centre of sphere $(r < R)$ will be
- A
$\frac{{\rho R}}{{3\,{\varepsilon _0}}}$
- B
$\frac{{\rho r}}{{{\varepsilon _0}}}$
- C
$\frac{{\rho r}}{{3\,{\varepsilon _0}}}$
- D
$\frac{{3\rho R}}{{{\varepsilon _0}}}$
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