Small, Sidney Aylmer, 1876- [from old catalog] · Chicago, F. J. Drake & co · leaf 324
alf of the ring has electro-motive force of the same polarity impressed oh it andthe two oppose each other, so that no current results.Ill Figure 151 the ring is swung around so that it notonly cuts lines of force, but the number of lines em-braced by it is constantly varying, hence… … Fig. 151. Ring Moving in Uniform Field of Force Under Conditions Producing a Current. but the number passing through it varies constantly.Electro-motive force and current both are produced. Inthe first two cases no power is expended on moving thering through the field; in the last two, power is so…
Electricity
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