Electrical engineer's pocket-book: a hand-book of useful data for electricians and electrical engineers (1901)
Foster, Horatio A. (Horatio Alvah), 1858-1913 · New York, D. Van Nostrand co.; London, E.& F.N. Spon, ltd. · leaf 248
Direction of Current about an Electromag-net, and location of its Poles. If the direction of the current flowing in the wire of the coil is not known,then with a magnet find the north pole of the magnet, by approaching thecompass to one of the poles ; the north-pointing pole will be repelled by…
Electrical engineering
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
