Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 344
when a magnet is in the neighborhood of the current its northpole tends to move along the lines of force in one direction and thesouth pole in the opposite direction. In other words, the magnet,if free to move, tends to take a direction across the conductor. Inthe case of a long straight wire the… … from the center of the conductor; i. e., the force is inversely propor-tional to the distance. If the thumb of the right hand is placed along the outside of theconductor pointing in the direction of the current, Fig. 12, the fingersof the hand may be curled around the conductor and will point inthe…
Electrical engineering
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