Lessons in practical electricity; principles, experiments, and arithmetical problems, an elementary text-book (1903)
Swoope, Coates Walton. [from old catalog] · New York, D. Van Nostrand company · leaf 249
nt section. Theopposition to be overcome in the pipe of smaller diameter is twice asgreat as in the larger pipe, since twice the pressure is required tosend the same current through it. In hydraulics, calculations aremade to deliver water at a certain rate of flow and under a certainpressure, in… … Fig. 203.—Hydraulic Analogy of the Fall of Potential. 230. Volts Lost in an Electric Circuit.—Consider nowan electric circuit in which a generator (battery or dyamo)is supposed to maintain a constant pressure of 60 volts be-tween two parallel lines at the point A, Fig. 204, as indicatedby a high…
Electricity · Magnetism
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