1. The problem statement, all variables and given/known data Given an infinitely long wire, with charge density [itex]\lambda[/itex], parallel to and a distance [itex]d[/itex] above an infinite, grounded, conducting sheet, what is the potential, [itex]V(x,y,z)[/itex] above the sheet? What is the induced charge on the sheet? 2. Relevant equations 3. The attempt at a solution This is a method if images problem. Construct a infinitely long wire with charge density [itex]-\lambda[/itex] a distance [itex]-d[/itex] below the plane of the sheet and then disregard the sheet (it creates the same potential, V=0, at the plane of the sheet). However, I ran into a snag when I tried to find the potential of an infinitely long charged wire. Is the potential infinite?