O The charge qenc must be all the charge lying within the Gaussian surface. O If the net flux through a Gaussian surface is zero it is certain there are no charges enclosed within the Gaussian surface. O The electric field E in the integral is due only to the charge qenc O Gauss' Law calculates the electric field only at the location of the Gaussian surface. O The charge qenc must be all the charge lying on the Gaussian surface. O Gauss's law holds only for symmetric charge distributions. O A Gaussian surface must be a closed surface (must cover a volume). O A Gaussian surface is a virtual surface used only for calculations. O A Gaussian surface must be a conductor. The area vectors on the Gaussian surface must all be in the same direction as the electric field on the surface. O The charge qenc must be all the charge in the