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 167
ostat is to absorb electricalenergy, and this energy, which appears as heat, is wasted in-stead of performing any useful work. A rheostat may beconstructed of coils of iron wire, iron plates or strips; car-bon, either pulverized in tubes or in the form of solid rodsor discs; German silver,… … Fig. 123. -Commercial Type ofRheostat. CIRCUITS AND THEIR RESISTANCE. 149 4^ If \\ 1 ^>—•>« \o) «<>*-< V U ^3*L -^ \u 0 \ 5° JJ^ V r ^ 3) t I Fig. 124.—Commercial Rheostat. Diagram of connections of theresistance coils. regulating the current in commercial electric circuits no…
Electricity · Magnetism
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