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 257
-. A push-button abovethis post serves to close the circuit.The resistance of the 150.volt coilis about 150,000 ohms, and there150 divisions on the upper are or … ink scale, or one division per Weston Double Scale meter 213. — Connections of Volt- black volt. The 15 volt coil terminates in the lower right-hand and upper left-hand posts, and has a resistance of about 1500 ohms. There are ten divisions *on this red ink scale per volt, so that one-tenth,…
Electricity · Magnetism
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