A polar molecule with permanent dipole moment makes an angle of with an applied field

PHYSICS · Subjective · Fermi University Physics · Electricity, Magnetism & Electromagnetism · Electrostatic fields and potential · Electrostatic fields and potential

The Boundary-Value Problem, Ch Cylindrical geometry, edges, and what a field does to a dipole

Problem

A polar molecule with permanent dipole moment

p = 4.5\times10^{-30}\,\mathrm{C\,m}

makes an angle of

60^\circ

with an applied field

E = 2.0\times10^{7}\,\mathrm{V\,m^{-1}}

. Find its potential energy

U

in this orientation, taking

U=0

for a dipole perpendicular to the field.

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