All Problems

Conductors and Dielectrics in an Electric Field

Problem 3.72

A non-polar molecule with polarizability β\beta is located at a great distance ll from a polar molecule with electric moment p\mathrm{p}. Find the magnitude of the interaction force between the molecules if the vector p\mathrm{p} is oriented along a straight line passing through both molecules.

Reveal Answer
F=3βp24π2ε0l7F=\frac{3 \beta p^{2}}{4 \pi^{2} \varepsilon_{0} l^{7}}