Principles and practice of electrical engineering (1914)
Gray, Alexander, 1882-1921 · New York [etc.] McGraw-Hill Book Company, inc. · leaf 30
current i, and bent to form a circular loop of radius r.The direction of the magnetic field produced is found by the rule in the lastparagraph. 4 Art. 9] ELECTROMAGNETISM An element ab acts on a unit pole at the centre of the loop with a force / which is found to be = kcomplete loop abXi and the… … Fig. 7.—Magnetic field produced by a loop carrying current. in cm. and the medium is air, then F = — dynes; a unit current is therefore of such value that, when flowing in a loop of 1 cm. radius, it acts on a unitpole at the centre of the loop with a force of 2t d}mes. This is called thee.g.s. unit…
Electrical engineering
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