# Electric Field due to a charged conducting finite cylindrical shell.

ed2288
Hi everyone. I'm having a bit of trouble with finding an electric field. Basically, I'm trying to understand the formula for a cylindrical capacitor, so the method involves integrating the field between two conducting cylindrical shells. Firstly can Gauss's law be used in this case, because the cylinder is finite? Are the field lines all radial, even at the very end of the cylinder? If so, this leads to my next problem. The field turns out to be: