Hawkins electrical guide. Questions, answers & illustrations; a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833- · New York, T. Audel · leaf 56
ally. The resistance of the external circuit and the standard one volt cell isassumed to be zero. Legal Ohm.—A resistance due to a column of meicury 106 cm. longand 1 sq. mm. in cross section at 0° C. This unit was adopted by theParis conference of 1884. TESTING AND TESTING APPARATUS 475 OHM TABLE… … Fig. 549.—Leeds and Northrup one ohm standard resistance (Reichsanstalt form); ad-justed at 20° C. Low resistance standards may be properly divided into two classes:1. those which are designed primarily as resistance standards, and 2, those designed ascurrent carrying standards. Those of the first…
Electrical engineering
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