There is a certain net flux $\backslash$Phi $$

through a Gaussian sphere of radius r enclosing an

isolated charged particle. Suppose the enclosing Gaussian surface is changed to $($a$)$ a

larger Gaussian sphere, $($b$)$ a Gaussian cube with edge length equal to r$,$ and $($c$)$ a

Gaussian cube with edge length equal to $2$r$.$ In each case, is the