Electricity and magnetism : an elementary text-book, theoretical and practical (1920)
Glazebrook, Richard, Sir, 1854-1935 · Cambridge : The University press · leaf 278
followingsection are free from this and other defects of the methods just describedwhich assume (1) that the e.m.f. of the battery remains constant, and(2) that the current can be read with sufficient accuracy on the tangentgalvanometer or ammeter, if a direct reading ammeter be employed.Frequently… … Fig. 164. The potential at A is higher than that at B and falls aswe pass along either circuit from its value at A to its valueat B. If we take a point C on the one circuit we can find apoint B on the other which has the same potential as C.To do this connect a wire to the circuit at C and to…
Electricity · Magnetism
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