A dictionary of electrical words, terms and phrases (1898)
Houston, Edwin J. (Edwin James), 1847-1914 · New York, The W. J. Johnston company · leaf 348
e cessation of such current. An electric current passed around a bar ofmagnetizable material, in the manner and direc-tion shown in Fig. 369, will produce the polarityN and S, at its ends or extremities as marked. The directions of the currents required to pro-duce N and S, poles respectively are… … Fig. j6g. Polarity of Current. The direction of this polarity may be predictedby the following modification of a rule by Ampere: Imagine yourself swimming in the wire in thedirection of the current; if, then, your face is
Electricity · Electrical engineering
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