6_Differences between electric potentials of a dipole and a single charge-by-Diwakar Karuppiah
Channel: P6 Scholars Academy
Date: 2020-06-25

(1)The potential due to a dipole depends not only on distance r but also on the angle between the position vector r ⃗ of the observation point and the dipole moment vector p ⃗ .The potential due to a single charge depends only on r.
       (2) The potential due to a dipole is cylindrically symmetric about the dipole axis. If we rotate the observation point P about the dipole axis (keeping r and θ fixed), the potential V does not change. The potential due to a single charge is spherically symmetric.
      (3) At large distance, the dipole potential falls off as 1/r^2   while the potential due to a single charge falls off as 1/r.