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Electrical instruments and testing; how to use the voltmeter, ohmmeter, ammeter, potentiometer, galvanometer, the Wheatstone bridge, and standard portable testing sets (1907)

Schneider, Norman H. (Norman Hugh), Hargrave, Jesse · New York, Spon & Chamberlain; [etc., etc.] · leaf 64

An illustration from Electrical instruments and testing; how to use the voltmeter, ohmmeter, ammeter, potentiometer, galvanometer, the Wheatstone bridge, and standard portable testing sets, 1907, leaf 64
LTMETERS AND AMMETERS. 41 If then there is an increased current flow in acircuit it must be due to an increased e.m.f. unlessthe resistance is changed. By taking a portion of the circuit and connectinga voltmeter across it, the variations of e.m.f. caus-ing the current flow will be indicated. In…

Electric testing · Electric apparatus and appliances

Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.

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