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 257
binding posts, and the cur-rent enters by the right-hand postmarked +. A push-button abovethis post serves to close the circuit.The resistance of the 150 volt coilis about 150,000 ohms, and thereare 150 divisions on the upper, orblack ink scale, or one division per Weston Double Scalevolt. The 15… … 213. — Connections ofVolt- MEASUREMENT OF PRESSURE. 239 or even twenty-five thousandths of a volt may easily be readfrom this scale. In using a double scale voltmeter, if indoubt about the value of the voltage to be measured, always usethe higher reading scale first, then if the value is below…
Electricity · Magnetism
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
