Cumming, Linnæus, b. 1843. [from old catalog] · New York, D. Van Nostrand · leaf 357
338 Electricity. [Book III. the coils at b, where it is divided, part going through the coilson the semicircle bca, and part through those on the semicircleIda. These parts unite again at a, and pass by the brush D tothe terminal B, by which the current returns to the battery A … Fig. 218. The wire coiled round the iron core of the semicircleadb tends to make it a magnet of horse-shoe type, havinga south pole at a, and a north pole at b. In the sameway, the current in coils round the iron core of acb beingin the opposite direction, also make a south pole at aand a north…
Electricity
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