Principles and practice of electrical engineering (1914)
Gray, Alexander, 1882-1921 · New York [etc.] McGraw-Hill Book Company, inc. · leaf 232
e current I is changing, the flux </> is also changing and a,voltage of self induction is induced in the coil which is equal to eSi = — n-rrl0~8 volts, see page 91 and since L = -y-TO-8 therefore Ldi = nd4> 10-8 and esi = — L ,, volts 240. Alternating Currents in Inductive Circuits.—If an… … Fig. 230.—Voltage and current relations in an inductive circuit,by curve /, Fig. 230, then between a and b, during which intervalof time the current is decreasing, the e.m.f. of self induction, tooppose this decrease, must be positive, while between b and c, dur-ing which interval of time the…
Electrical engineering
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