In a rectangular coordinate system two positive point charge of 10.: C each are fixed at the points x = 0.1 m, y = 0 and x = - 0.1m, y = 0. Find the magnitude and the direction of the field at the following points: (a) the origin (b) x = 0.2m, y = 0 (c) X = 0.1m, y = 0.15m; (d) x = 0, y = 0.1m