A point charge of $2.0\mu C$ is at the centre of a cubic Gaussian surface $9.0 ext{ cm}$ on edge. W

Question

A point charge of $2.0\mu C$ is at the centre of a cubic Gaussian surface $9.0	ext{ cm}$ on edge. What is the net electric flux through the surface?

Professor PC Thomas Classes · Answer

Net flux $\Phi = Q/\epsilon_0 = \frac{2.0 	imes 10^{-6}}{8.854 	imes 10^{-12}} = 2.26 	imes 10^5	ext{ N m}^2	ext{/C}$. The size of the Gaussian surface does not affect the net flux.