Chapter 23, Problem 45P

(II) Calculate the electric potential due to a tiny dipole whose dipole moment is 4.8 × 10^–30 C · m at a point 4.1 × 10^–9 m away if this point is (a) along the axis of the dipole nearer the positive charge; (b) 45° above the axis but nearer the positive charge: (c) 45° above the axis but nearer the negative charge. Let V = 0 at r = ∞.