Small, Sidney Aylmer, 1876- [from old catalog] · Chicago, F. J. Drake & co · leaf 333
a galvanoscope, just as in theWheatstone bridge method. When it shows no poten-tial difference, the reading of the resistance coils givesthe result of the experiment. 334 ELEMENTARY ELECTRICITY Principle of the Potentiometer.—In Figure 157 W is abattery giving a constant current, R is an adjustable… … Fig. 160. High-Voltage Connections for Potentiometer. galvanometer G and at £ a battery not shown in place,because various cells are used there, E indicating thebinding posts for connecting them. For general require-ments the drop between M and M must be at least 1.5volts under the action of the…
Electricity
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