Easy electrical experiments and how to make them; (1918)
Dickinson, Leonard Perley, 1874- [from old catalog] · Chicago, F. J. Drake & co · leaf 217
nected to two binding posts A and B. The purpose ofthese coils is to receive the current to be measured. The 202 EASY ELECTRICAL EXPERIMENTS. effect of the current in the coils is to cause the pointer tomove in one direction or the other against the pull of themagnets. The greater the current… … voltmeter. In order to measure the deflection of the pointera circular scale cut from a piece of stiff Bristol board ismounted at S, by being glued firmly to the top of the magnet,the pointer being so adjusted that it is about 1-16 inch abovethe scale. In our next chapter an explanation of the…
Electric apparatus and appliances · Electricity
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