Hi, I am interested to simulate the capacitor with plates having an angle of 195 degrees between them. https://dl.dropboxusercontent.com/u/32847378/cp1.jpg [Broken] I know that if the angle between of plates is 180 deg, then electric lines of forces will follow a elliptical path and equipotential lines perpendicular to them as shown in image, https://dl.dropboxusercontent.com/u/32847378/coplanar1.jpg [Broken] and for mapping inverse cosine function is used. i.e. W = inv. Cos (Z) where W = x + i y , Z = u + i v So, for my case Will the electric lines of forces still follow the elliptical path? Can they also be mapped using inverse cosine function or will there be a variation? This will help me in finding the capacitance. Thanks in advance.