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 276
Fig. 230.—Principle of the Wheat-stone Bridge. Fig. 231.—Principle of the Wheat-stone Bridge. The resistance in the arm, A, bears the same relation to thatin B as the resistance in the rheostat at C does to the un-known resistance at D. Spools are selected for A and Band the resistance of C varied…
Electricity · Magnetism
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