Hawkins electrical guide ... : questions, answers & illustrations : a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications ; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833-1928 · New York : T. Audel & Co. · leaf 149
129 Ques. State the essential condition for current in-duction in a uniform field. Ans. The coil in which a current is to be induced, must betilted in its motion across the uniform field, or rotated aroundany axis in its plane as in fig. 128, so as to alter the number oflines of force which pass… … Fig. 128.—Electromagnetic induction: If a coil be given a motion of rotation from any pointwithin its own plane so that it passes through a uniform magnetic field, a current will beinduced in the coil because the number of lines of force passing through it is altered, field in the direction in…
Electrical engineering
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