5) We also saw that
the electric field of a dipole at a point with position vector r depends not
just on the magnitude r, but also on the angle between r and p Further,
FIGURE 2 4 Variation of potential V with r [in units of
(Q/4pe0) m-1] (blue curve) and field with r [in units
of (Q/4pe0) m-2] (black curve) for a point charge Q