Practical applied electricity; a book in plain English, for the practical man. Theory, practical applications and examples (1911)
Moreton, David Penn, 1882- · Chicago, The Reilly & Britton co · leaf 100
spond tothe direction in which the screw turns. 102. Strength of Magnetic Field.—The strength of any-magnetic field is measured in terms of the number of linesof force per unit area, usually one square centimeter per-pendicular to the direction of the field. The symbol usedto indicate field… … l_s Fig. 60 Fig. 61 magnetic field at a certain point, due to a current in a con-ductor or a permanent magnet, will depend directly uponthe strength of the current in the conductor, or the strengthof the permanent magnet, and inversely as the square of theaverage distance the point is from the…
Electrical engineering
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