Principles and practice of electrical engineering (1914)
Gray, Alexander, 1882-1921 · New York [etc.] McGraw-Hill Book Company, inc. · leaf 36
coil does not change and the resultant e.m.f. generated in thecoil is zero; the portions ab and cd of the coil are cutting linesof force but the e.m.fs. generated in these portions are equaland opposite. Art. 15] ELECTROMAGNETIC INDUCTION 11 14. Mutual Induction.—The flux threading a coil may… … Fig. 15. is no change in the flux. If the current in coil A is increased, theflux threading coil B will increase and this change of flux will in-duce an e.m.f. in coil B which will cause a current I2 to flow in sucha direction as to oppose the increase in flux. If the current in coilA is decreased,…
Electrical engineering
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