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Unformatted text preview: charges, then, this plane is an equipotential surface that extends to infinity. That is, at any point on plane P, the potential will be zero. Assume a test charge q on plane P and that resides at infinity. If we move q over plane P (it does not have to be a line, it can be in any direction on plane P such as the one shown in figure) and bring it to midway point, then in ANY part of the displacement no work will be done. Therefore, it is possible to bring a test charge from infinity to zeropotential midway without doing ANY work at ANY part of the displacement. { To students who claimed electric field requires us to do some work : Since equipotential surfaces are perpendicular to E electric field lines, it does no work on the equipotential surface.} +Q − Q...
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 Fall '09
 AtillaAydınlı
 Charge, Work

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