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 175
r left-handed, is another reason for assumingthat a current has direction. The direction of current in anyvertical wire can thus be determined by a single magneticneedle, by noting the general direction its N-pole points whenpresented near to the wire. If the N-jiole points clockivise as you look… … .] y Dotted Circles and Jrrovs.,^/* \ thereon indicate direction•-•-V.i.J of Currents Field cf Foro Fig. 134.—A Magnetic Body Free to Move, etc., *|[ 43. Exp. 50 : Figs. 132 and 133 show a plan view of the position of theneeidles on a horizontal piece of cardboard, with a vertical wire…
Electricity · Magnetism
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
