Publisher's description - Electric Multipole Field Model 1.4
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Electric Multipole Field Model is a free implementation of a point charge (monopole), a dipole, or a quadrupole can show either field vectors or the scalar potential (voltage).
A slider changes the charge and a movable detector shows the electric field direction and magnitude or measures the potential.
Detector values can be recorded into a data table and analyzed using a built-in data analysis tool.