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 296
at thewire will move when the magnet is stationary. Arrange thewire over the needle and place the palm of the left hand over thewire as before, ^ 170; the oidstretched thumb at right angles tothe hand will indicate the direction the vnre will move. Exp. 68 :—Insert the rectangular coil of a single… … a pocket compass find the direction of current around the wire. Openthe circuit and lay a bar magnet on the ampere frame base, arrangedso tliat the current flows over it from N to S, as in Fig:. 240. Themagnet is now stationary and the wire free to move. When the cur-rent flows through the wire it…
Electricity · Magnetism
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