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 176
h itself the greatest numberof magnetic lines of the circular field, and also to such a posi-tion that its own natural magnetic lines will be in the samedirection as the currents lines of force. Considering Fig. 184, the current flows over the needle fromright to left (also N to Sj. As you look… … Fig. 135.—Resultant Deflections of the Magnetic Needle When Placed Nearto a Current-Carrying Wire. of the needle, Nj, moves to the position, N^, at right angles tothe wire, and in the direction of the field underneath the wire(which is from S^ to NJ, so that the direction of the whirlsand the…
Electricity · Magnetism
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