Elementary treatise on electricity and magnetism : founded on Joubert's "Traité élémentaire d'électricité" (1909)
Foster, G. Carey (George Carey), Porter, Alfred William, 1863-1939, Joubert, Jules François · London : Longmans · leaf 449
ave for the electromotive force atany time t r, , ^ = ^„ sin a = E„ sin w^ = E^ sin —. In such a case the electromotive force is said to vary harmonically.A variation of this kind is expressed graphically by the ordinatesof the sign-curve gab (Fig. 278). In this figure the distance obrepresents… … Fig. 278. C=EIR. The maximum strength of current would be EJR, andthe ciurent at any instant would be r, K . 27rtC=;^°sin-, that is, the current would also vary harmonically in the sameperiod as the electromotive force, and might be represented by asimilar sine-curve, having the same period and…
Electricity · Magnetism
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