1. The problem statement, all variables and given/known data Charge is uniformly distributed along a circular plate (radius R). surface charge is [tex]\sigma[/tex]. a) Determine the electric potential on the plates axis distance x from the center of the plate. b) Calculate the electric field on the axis distant >x from the center of the plate. 3. The attempt at a solution http://www.aijaa.com/img/b/00132/3756420.jpg [Broken] http://www.aijaa.com/img/b/00540/3756421.jpg [Broken] I couldn't get the E field any "cleaner" and in a I wasn't sore about the substitution of A (i.e. can I do it like that). fire my methods correct? And don't mind my handwriting, MS Paint isn't that responsive. Edit: Holy crap! Can I resize the images?