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Electrostatics is concerned with the electrical fields and scalar potentials of stationary electrical charges and charge distributions. Use this for questions about electromagnetic situations in which currents and magnetic fields are absent, otherwise use the [electromagnetism] and/or [magnetic-fields] tags.
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Why is the potential energy of a dipole in an electric field zero when the dipole points per...
Another way to think about this problem is to consider the direction of the electric field along any point along the perpendicular bisector of the line between the dipole. It is, in fact, purely in th …