Lessons in practical electricity; principles, experiments, and arithmetical problems, an elementary text-book (1903)
Swoope, Coates Walton. [from old catalog] · New York, D. Van Nostrand company · leaf 320
c lines of force springingfrom the primary, CD, cut the secondary circuit, AB, andan inverse momentary current flows through the secondary,left-hand diagram, Fig. 270, for the period of time required q^ Fig. 269.—Direct InducedSecondary Current. ELECTROMAGNETIC INDUCTION. 301 to establish the… … Fig. 270.—Inverse Induced Current on Make of Circuit, DirectCurrent on Break. current, right-hand diagram, Fig. 270. If the primaryswitch be automatically closed and opened a great manytimes per second, the momentary induced currents will be-come constant in duration, but will change their…
Electricity · Magnetism
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