Lessons in practical electricity; principles, experiments, and arithmetical problems, an elementary text-book (1903)
Swoope, Coates Walton. [from old catalog] · New York, D. Van Nostrand company · leaf 297
thumb, first and secondfingers of the left hand all at rightangles to each other, as in Fig. 24-3,and the hand so that the first fingerindicates the direction of the linesof force of the magnet, and the secondfinger the direction of the current inthe wire; the thumb will then in-dicate the… … Fig. 243—Left-Hand Rule for Determining the Direction of Rotation of a Moving Wire in a Magnetic Field.This rule applies to motors. ELECTR OD YNAMICS. 279 a direction as to increase the magnetism of the pole, just asin the automatic twisting experiment, ^f 266. This rule is very convenient for…
Electricity · Magnetism
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