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 137
unknown resistance. The first deflection multiplied by the voltmeter 114 ELECTRICAL INSTRUMENTS. resistance will give the resistance through whichone degree of deflection could be obtained, or theconstant. The value of the second deflection can then becalculated from this constant, the latter… … Fig. 74. description of this test being given in the chaptertreating on measurements with the voltmeter. Testing Resistance of Galvanometer. In manytests it is necessary to know the resistance of thegalvanometer being used. If it is not marked onthe instrument it may be found by the…
Electric testing · Electric apparatus and appliances
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