Lessons in practical electricity; principles, experiments, and arithmetical problems, an elementary text-book (1902)
Swoope, Coates Walton. [from old catalog] · New York, D. Van Nostrand company · leaf 302
ions, greatly increases the action by increasing the magneticeffects of the whirls around each wire. In any solenoid or electro-magnet, the magnetic field, therefore, tends to bind the wires closertogether, as in Rogets spiral, since the current is in the same direc-tion through all the turns, and… … ?piral. Fig. 250.—Rogets Jumping It illustrates the law of parallel currents flowingin ttie same direction. 284 PRACTICAL ELECTRICITY, tious AP and CP attract each other, according to Law 2. Thisis indicated by the polarity of the wires and the direction ofthe whirls around them. Currents also flow…
Electricity · Magnetism
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