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Electric dipole moment

Electric dipole

Two point dipoles separated by $\mathbf r$ have interaction proportional to
$$
\frac{\mathbf p_1\cdot\mathbf p_2}{r^3}
-\frac{3(\mathbf p_1\cdot\mathbf r)(\mathbf p_2\cdot\mathbf r)}{r^5}.
$$

The formula combines the source <electric dipole> field with the second dipole's coupling to that field.

Electric dipole-dipole interaction

Past exam of the mathematics course of the University of Cambridge / 2020 / ib / Paper 1 / 16D / Solution

Past exam of the physics course of the year 1 of the natural sciences course of the University of Cambridge / 2019 / Section B / 10 / Solution

Electric dipole-dipole interaction

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