[SOLVED] Electric field in a solid cylinder with an offset hole 1. The problem statement, all variables and given/known data its teenie, but it says: Superposition: an infinite cylinder of radius R and uniform charge density (row) contains a cylindrical cavity of radius R/2 as shown. Find the electric field in the cavity. 2. Relevant equations Gauss's Law I guess. 3. The attempt at a solution My first thought was 'zero. duh'...but thats not exactly superposition. I know there has to be something about the whole cylinder minus the hole...but I'm not sure how to go about integrating with a common origin or...I've just gotten myself very confused. HELP!