Allen, Charles Ricketson, 1862- [from old catalog] · New York, H. Holt and company · leaf 59
hrough the galvanometer, which will bedeflected. Suppose now we increase the resistance in thebox until the galvanometer reads 0, then we know that theresistance of acd equals the resistance of abd (since thewires of which the instrument are constructed have practi- 46 CURRENT ELECTRICITY. cally no… … The sides M and dc are cut, and two binding-posts insertedin each. From the binding-posts b and c wires (dottedlines) are led to the galvanometer G, and the battery-wiresare attached to the binding-posts a and d. In the battery-
Physics
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