EA^EC. A and B are called conjugate points with reference to thesphere* PEOBLEMS IN STATICAL ELECTRICITY. 85 Hence we see that for either e^ at A, or — e^ at B, wemay, as far as actions on the opposite side of the sphere areconcerned; substitute the electrified surface; and, conversely,for the… … i> The forces on P are clearly -^ along AP, and -\ along i . ^? PB, and their resultant is along PE, since it is normal to the equipotential surface. Let F be the magnitude of the resultant, then completing the parallelogram EKPL, F : component in ^P :: PF : PK, and by similar triangles PK : BE…
Electricity
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