The wire shown above has one end located at the origin. The wire has length \(L\) and a non-uniform charge density \(\lambda = \frac{q_o y}{L^2}\text{.}\) Points A and B are located a distance \(x_o\) from the top and bottom ends of the wire, respectively.
A uniformly charged ring with total charge \(-q_o\) and radius \(R\) is located in the \(xy\)-plane. Determine the electric potential a distance \(z\) above the center of the ring
Compare the electric potential energy to the gravitational potential energy. Identify similar equations and write a few sentences commenting on their differences.
