Energy Density of an Electrostatic Dipole

The positive and negative charges are at (0,0,± d/2). The potential ϕ(ρ,z,d) of the dipole in cylindrical coordinates (ρ,φ,z) does not depend on φ because of symmetry. The graphs show the contour plots of the potential or electrostatic energy density u(ρ,z,d) in the neighborhood of the charges.

THINGS TO TRY

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Contributed by: Franz Krafft

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