Goal: Relate flux and electric field
Source: 283-405 If phi = 0, is E=0?
True or False: If the electric flux = 0 over some closed Gaussian
surface, then this means that the electric field = 0 on that surface.
(2) A good followup question is; Even though the electric field is not
zero everywhere, can it be zero somewhere on the Gaussian surface? If
so, draw a charge configuration for which this is true?