1. The problem statement, all variables and given/known data My book demonstrates how a uniform electric field through a box generates a net flux of zero. I was wondering if the same would happen from a point charge outside of the cylinder on one end instead of a uniform electric field. 2. Relevant equations Flux = E⋅A 3. The attempt at a solution My book says that charges outside of the surface do not give a net electric flux through the surface. So does that mean if a positive point charge is at one end of the cylinder, all the flux cancels out? The flux through the nearest face would be negative because E and A are in opposite directions and the flux on the other end would be positive BUT smaller in magnitude because E is smaller (because the distance would increase) while A stays the same. And the flux around the surface would be positive. So is: Φnearest face = Φfurther face + Φaround the cylinder ?