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 443
ere on a 50-volt circuit;.5 ampere on 110-volt; and .25 ampere on 220-volt circuit,the resistance of the filament increasing with the voltagewhen the candle power is constant. For any particular volt-age the higher the candle power of the lamp the larger thearea of its filament, the less its… … Fig. 383.—Incandescent Lampand Retaining Socliet. ELECTRIC LIGHTING. 425 since the temperature rises Avitli the increased current, and thehfe of the lamp is shortened. For example, if the filamentof a 110-volt lamp has such a resistance that it will carryone-half ampere, without a dangerous rise in…
Electricity · Magnetism
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