Electricity experimentally and practically applied; a book for the beginner and for the practical man, principles, experiments, practical applications and problems (1910)
Ashe, Sydney Whitmore · New York, D. Van Nostrand company · leaf 155
ELECTRICAL MEASUREMENTS 133 … Fig. 180. — Circuits of Leeds and Xorthrup Company Potentiometer. 134 EXPERIMENTAL ELECTRICITY switches, a constant source of potential such as a storage battery, and a voltmeter. For a beginner it is desirable to ^ use a storage battery or a number of dry LuTm batteries connected in series as a…
Electricity · Electrical engineering
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