Gerard, Eric Mary, 1856-1916 · New York W.J. Johnston · leaf 154
te of which is con- 138 ELEcrRicirv. nected to earth, q and U being respectively the charge andpotential of the other plate, W = \qU. If we denote by C the capacity of the condenser, q= CU-^whence W=\qU=\CU- = \^, lOi. Theory of the Quadrant Electrometer.— The cylindrical framework of the quadrant… … Fig. 51. Call U the potential of the needle,C/, that of the quadrants A, B,U^ that of the quadrants C, D. The charge of the condenser E — A, B is proportionalto the difference of the potentials U— U^, and the horizontalcomponent of the force tending to displace the needletowards the given quadrants…
Electricity · Magnetism
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