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 297
humb, first and secondfingers of the left hand all at rightangles to each other, as in Fig. 24S,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 tvire; the thumb ivill 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. ELECTRODYNAMICS. 279 a direction as to increase the magnetism of the pole, just asin the automatic twisting experiment, ^ 266. Tliis rule is very convenient for…
Electricity · Magnetism
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