<P> This non-trivial result shows that any spherical distribution of charge acts as a point charge when observed from the outside of the charge distribution; this is in fact a verification of Coulomb's law . And, as mentioned, any exterior charges do not count . </P> <P> A cylindrical Gaussian surface is used when finding the electric field or the flux produced by any of the following: </P> <Ul> <Li> an infinitely long line of uniform charge </Li> <Li> an infinite plane of uniform charge </Li> <Li> an infinitely long cylinder of uniform charge </Li> </Ul> <Li> an infinitely long line of uniform charge </Li>

According to gauss's law what does this mean about the electric field inside the sphere