For a line charge of uniform density 10-3 C/m situated along the z-axis between (0, 0, -1) and (0, 0, 1), obtain the series expression for the electric potential at the point (0, y, 0) by dividing the line charge into 100 equal segments and considering the charge in each segment to be a point charge located at the center of the segment. Then find the series expression for the electric field intensity at the point (0, 1, 0).