Lessons in practical electricity; principles, experiments, and arithmetical problems, an elementary text-book (1902)
Swoope, Coates Walton. [from old catalog] · New York, D. Van Nostrand company · leaf 254
lresistance is now equal to the internal resist-ance there is 1 volt drop inside the cell. Short circuit the cell by avery low resistance and the voltmeter indicates practically zero, thecurrent from the cell is a maximum and all of the E. M. F., 2 volts,is used in sending the current through the… … Fig. 210.—Variation ofP.I), and Current with aVariation of Resistance. Ohms External Circuit, R. Volts Across Battery, P. D. Amperes, C. Infinity Equal to E. M. F. 0 • Great compared with r Verv little less thanE. M. F. Small R, say any value R+rXE-M.F. E. M. F.R + r Small compared with r Small…
Electricity · Magnetism
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