Lessons in practical electricity; principles, experiments, and arithmetical problems, an elementary text-book (1902)
Swoope, Coates Walton. [from old catalog] · New York, D. Van Nostrand company · leaf 281
od of operating are as given heretofore.For measuring low and medium resistances one or two cells inseries may suffice to operate the bridge. The higher theE. M. F. used the more accurate the results. For very high resistances, insula-tion resistance, etc.,a number of cells,generally mountedin a… … Fig. 235.—The Lozengre Diagram Applied to thePortable Wheatstone Bridge. read from the dial of the instrument when the batteiy circuit isclosed. An ohmmeter indicates the relation existing betweenthe potential difference at the ends of a conductor and the cur-rent flowing through it, since the…
Electricity · Magnetism
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