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 269
tmeter required).—This method is very con-venient for many practicalmeasurements. No ammeter isrequired. The known and un-known resistances are connectedin series and to a source of con-stant current, Fig. 223. Thedrop across each resistance, asmeasured by the voltmeter, isdirectly proportional to… … Fig. 223.—Measurement of Re-sistance by the Drop Methodof Comparison. drop resistance bears to the value of the unknowrn resistance, or,calling the known resistance the standard and the unknownresistance X, then : Drop on Standard Resistance of Standard Drop on X Resistance of X ~ , v Res. of…
Electricity · Magnetism
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
