Henderson, C. Hanford (Charles Hanford), 1861-1941, Woodhull, John F. (John Francis), 1857-1941 · New York, D. Appleton and company · leaf 296
nience may be distin-guished as the primary coil—may be thrust into the sec-ondary coil and withdrawn, producing induced currents inopposite directions, just as in the case of the magnet (Fig.185). If the primary coil remains within the secondary ELECTRIC CURRENTS 273 coil, and the primary current… … Fig. 185.—Currents induced by varying currents. of the secondary coil. Furthermore, the parallelism be-tween induction by currents and induction by magnets iscompleted by the fact that here again the strength of theinduced current depends upon the amount and rate ofchange in the primary field. 262.…
Physics
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