$\frac{\Delta Q}{\Delta t}=C \frac{\Delta V}{\Delta t}$
$100 \times 10^{-6}=500 \times 10^{-6} \times \frac{10}{\Delta t}$
$\Delta t=50 \mathrm{\,sec}$
Statement$ -1$ : When a charge $q$ is take from the centre of the surface of the sphere its potential energy changes by $\frac{{q\rho }}{{3{\varepsilon _0}}}$
Statement$ -2$ : The electric field at a distance $r(r < R)$ from centre of the sphere is $\frac{{\rho r}}{{3{\varepsilon _0}}}$



(If initial charge is $q_{0}$ )
If a point charge $q_A$ is placed at the center of the shell, then choose the correct statement $(s)$