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 126
along itwill also be equal. If V be connected as at first to .4 and the con-nection at E be drawn along the wTire towards .4,the e.m.f. will be observed to decrease. This il- 102 TESTING WITH GALVANOMETER. 103 lustrates what is termed the fall of potential,or if electrical work is being performed,… … Fig. 71. As long as the resistance of A E remains un-changed, a greater current flow requires a greatere.m.f. Applications of Ohms Law. If the resistancebetween the connections of V be known, the cur- 104 ELECTRICAL INSTRUMENTS. rent flowing may be computed from the deflection E of V by Ohms law. /…
Electric testing · Electric apparatus and appliances
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