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 315
the greater momentary deflection of the galva-nometer needle. From the above statements, then, theinduced electromotive force is dependent upon, and it canalso be proved to be pro-portional to, (a) The number of mag-netic lines of force cut, orthe strength of the field; (6) The speed or rateat… … Fig. 264.—The Polarity of the Induced Current Tends to Stop the Motion Producing It—Lenzs Law. wire down past the magnet inbe coiled up, as in the solenoid, connected to the galvanometer.If now either a permanent or an electromagnet be thrustinto the solenoid, a momentarv induced current will flow…
Electricity · Magnetism
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