Find the dipole moment of a system where the potential 2.0×10−5V at a point P, 0.1m from the dipole is 3.0×104. (Use θ=30o).
The potential at a distance r due to dipole is V=14πϵ0→p.^rr2 where →p= dipole moment.
or V=14πϵ0pcosθr2
or p=4πϵ0Vr2cosθ=4π×8.85×10−12×2×10−5×(0.1)2cos30=2.57×10−17Cm