Text-book of general physics, for the use of colleges and scientific schools (1899)
Hastings, Charles Sheldon · Boston: Ginn & company · leaf 473
primary current is maintainedconstant, the induced current immediately disappears. Ifthe primary current be now stopped, an induced currentis observed in the secondary, which has the same directionthrough hV as the original current through aa. It will alsobe found that any increase in the strength… … Fig. 286. there will be no effect in the secondary circuit. The inducedcurrents will be much increased by arranging the two wiresin concentric insulated coils, and still more by introducinga soft iron core into the coils. Entirely similar phenomena of self-induction take placewithin the primary…
Physics
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