# Gaussian surface - cube

by quantum13
Tags: cube, gaussian, surface
 P: 66 1. The problem statement, all variables and given/known data A particle charge of q is placed at one corner of a Gaussian cube. What multiple of $q/\epsilon_0$ gives the flux though each cube face not making up that corner? The solution is amazing - stack up eight cubes around the corner and find the flux through each individual cube and individual face of the cube $$(1/8 * 1/3) q/\epsilon_0 = 1/24 * q/\epsilon_0$$ However, I don't see how this makes sense. There is no charge included in the three opposite faces of the cubes meaning there should be no flux there, even though there definitely is flux from the stacked cubes method. How can this contradiction be explained? 2. Relevant equations Gauss's Law 3. The attempt at a solution Uh.. ??