Consider an electric dipole with charge +qlocated at xd, and charge -q located at x+d. (a) compute the electric field e(0, y, 0) for points on the y-axis. justify the direction (sign) of your answer by sketching the field lines of the dipole. examine the limiting case where the dipole is very far away from our point of interest (i. e. y> > d) by writing your answer in terms of a simple formula times a power series in the small quantity d2/y2 (keeping terms through 2nd order).