Principles and practice of electrical engineering (1914)
Gray, Alexander, 1882-1921 · New York [etc.] McGraw-Hill Book Company, inc. · leaf 234
nt required to give the same voltage ofself induction. 242. Power in an Inductive Circuit.—The power in a circuitat any instant in watts is the product of e and i the voltage andcurrent at that instant. In an inductive circuit of negligibleresistance the current lags the applied voltage by 90… … Fig. 231.—Voltage, current and power in an inductive circuit. when the current is zero. Between g and a the voltage and cur-rent are in the same direction so that power is positive or energyis being put into the circuit, while between a and d the currentand voltage are in opposite directions so…
Electrical engineering
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