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 Rationalised 2023-24
Physics
50
the field falls off, at large distance, not as
1/r 2 (typical of field due to a single charge)
but as 1/r3 We, now, determine the electric
potential due to a dipole and contrast it
with the potential due to a single charge