Question

Figure shows, in cross section, two solid spheres with uniformly distributed charge throughout their volumes. Each has radius $R$. Point $P$ lies on a line connecting the centres of the spheres, at radial distance $R/2$ from the center of sphere $1$ . If the net electric field at point $P$ is zero and $Q_1$ is $64\mu C$, what is $Q_2$ (in $\mu C$ )

Answer 1

Answer: 72.00