1. The problem statement, all variables and given/known data ≈ What is a 3D representation of voltage using Kq/r assuming a positive point charge and what is the equation in cartesian and cylindrical form 2. Relavent equations Kq/r 3. Attempt at solution I was trying to get a better understanding of Voltage, to really FEEL voltage... So I drew a graph of a 3D depiction of what I believed to be the representation of a +q point charge. It's pretty much a hill where the max is where the voltage is highest assuming the point charge is positive and levels off asymptotically at 0 as r increases. Is this a correct graph? Because if voltage increases as a radius decreases for a positive point charge, shouldn't the voltage move to infinity as you get closer and closer to the positive point charge? So the graph should really be a |1/x| with both sides approaching infinity instead of a |1/x| with a curved top with a maximum? Then I wanted to know the equation of the 3D surface generated. How do I convert V(r) = kq/r to a 3d surface? For cartesian for I'm guessing just Kq / root(x^2 + y^2) Are there any possible applications of understanding the 3D graph of voltage of a point charge?