What is the net electric flux within a Gaussian surface is directly related to what physical quantity/quantities?
a) the area chosen
b) the amount of charge enclosed by the area
c) both the amount of charge enclosed by the area and the area chosen
1 answer
The whole point is that the total flux through the surface is proportional to the enclosed charge. If the surface surrounding a point charge is a sphere, the E field drops with the radius squared so that the integral of E d area is constant as you get further away.