Gerard, Eric Mary, 1856-1916 · New York W.J. Johnston · leaf 339
pulsion exercised by the primary current, tends toplace itself in the position bb, for which the periodic fluxtraversing it is a minimum. The mirror il/enables us toread by reflection the angle at which the disc comes to rest,under the influence of the electrodynamic forces on onehand and the… … Fig. 97. tinuously, the current giving it a new impulse at each cross=ing of the plane normal to bb. IMPEDANCE* 213. Inductance.—A sinusoidal E. M. F. may be ex-pressed by e ^ E sin &?/, •where e is the instantaneous E. M. F. in volts ; E is the maximum cyclic E. M. F. in volts ;GO is the…
Electricity · Magnetism
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