Electrical instruments and testing; how to use the voltmeter, ohmmeter, ammeter, potentiometer, galvanometer, the Wheatstone bridge, and standard portable testing sets (1907)
Schneider, Norman H. (Norman Hugh), Hargrave, Jesse · New York, Spon & Chamberlain; [etc., etc.] · leaf 147
.m.f. across one-half of 123 124 ELECTRICAL INSTRUMENTS. it will be one-half that across its entire length.The point of zero will then in the present case bein the middle at C, and the relation between thetwo lengths of wire will equal that between the twoe.m.fs. Or the length A C will be to .4 E… … Fig. 79. of e.m.f. and two circuits; the potentiometer twoopposing e.m.fs. in one circuit. A balance is obtained in the bridge when thepoints of equal e.m.f. in two circuits are connectedthrough the galvanometer. In the potentiometer the point of equal e.m.f.between two e.m.fs. is found in one…
Electric testing · Electric apparatus and appliances
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