Lessons in practical electricity; principles, experiments, and arithmetical problems; over four hundred illustrations; an elementary text book (1909)
Swoope, C. Walton (Coates Walton), d. 1901 · New York, D. Van Nostrand company · leaf 320
Fig. 270.—Inverse Induced Current on Make of Circuit, DirectCurrent on Break. current, right-hand diagram, Fig. 270. If the primaryswitch he 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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