Show that the energy of an ideal dipole p in an external electric field E is U = -p E Start by calculating the energy of a physical dipole of charges ±q separated by a displacement a, with p = qa. Then take the limit a → 0, q + o with qa constant (equal to p).
Show that the energy of an ideal dipole p in an external electric field E is U = -p E Start by calculating the energy of a physical dipole of charges ±q separated by a displacement a, with p = qa. Then take the limit a → 0, q + o with qa constant (equal to p).
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