Lessons in practical electricity; principles, experiments, and arithmetical problems, an elementary text-book (1902)
Swoope, Coates Walton. [from old catalog] · New York, D. Van Nostrand company · leaf 320
ELECTROMAGNETIC LXDUCTIOX. 301 to establish the electromagnetic field around the primary,^ 315. When the switch is opened the magnetic linesof the primary will collapse upon it and again cut thesecondary, but in the opposite direction, producing a direct … K Doiai 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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