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: (charge/2*Pi*Length*epsilon_0*radius) So, when you integrate this to obtain the potential, you will end up with a natural logarithm, meaning at infinity, the potential is infinity!? I'm sure this is wrong but I just can't see where the error is. Any help would be greatly appreciated!