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 460
The result is that the counter E. M. F. of self induction, instead of being momentary, as when the current is made and broken through a conductor, is continuous, but varies in value like the applied E. M. F. and the current. The value of an induced E. M. F. is proportional to the rapidity with… … 442 PRACTICAL ELECTRICITY. When the current, and therefore the magnetism, is at themaximum value in either direction, its strength varies verylittle within a given momentary period of time, and conquently the induced E. M. F. is zero at the moment thecurrent and magnetism is at maximum, the E M. V.…
Electricity · Magnetism
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