Hawkins electrical guide ... : questions, answers & illustrations : a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications ; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833-1928 · New York : T. Audel & Co. · leaf 82
ak will show nearly full voltage. When no ammeteris at hand, the battery current may. be tested by disconnecting the endof one of the terminal wires and snapping it across the binding post ofthe other terminal; the intensity of the spark produced will indicatethe condition of the battery. Points…
Electrical engineering
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