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 158
heos; at reading plusthe B arm and divided by one hundred. Formula. Let E represent e.m.f. of line (orindication voltmeter should show), c the e.m.f. ofstandard cell, R resistance in rheostat, B resistancein B arm. Then E = —==— x e. CHAPTER IX.Condensers. Charge and Discharge of Condenser. Connect… … Fig. 81. a second deflection takes place at G but in theopposite direction. Again depress K so as to open the back contactbut not close the battery circuit. Upon again re-leasing K a deflection will ensue but very much lessthan the previous ones. And this last operationbeing repeated, decreasing…
Electric testing · Electric apparatus and appliances
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