Lessons in practical electricity; principles, experiments, and arithmetical problems; over four hundred illustrations; an elementary text book (1909)
Swoope, C. Walton (Coates Walton), d. 1901 · New York, D. Van Nostrand company · leaf 243
al watts = 24, or one-halfthe power the cells could deliver on shorecircuit. 227. Efficiency of a Battery.—Byefficiency is meant the relation of the usefulwork done to the total energy expended.A perfect battery, or dynamo (that is, oneVolts with no internal resistance), would deliverInter- an 0f… … 6VoJw —n Fig. 201.—Lost on thelal Resistance. ELECTRICAL WORK AND POWER. 225 by 100, and one-half of this amount is unavailable for usefulwork, the efficiency would be 50 per centum or 50 per cent.In no machine, then, can the efficiency be 100 per cent. To Find the Efficiency of a Batteky : Divide…
Electricity · Magnetism
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