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 85
CELLS 65 the fact that while no action takes place when amalgamatedzinc is placed in dilute sulphuric acid at ordinary atmosphericpressure, the creation of a vacuum above the liquid causes arapid evolution of hydrogen, which, however, stops on the re-admission of the air. Amalgamating a zinc causes… … Fig. 72.—Diagram of a series battery connection: four cells are shown connected by thismethod. If the cell voltage be one and one-half volts, the pressure between the (+) and(—) terminals of the battery is equal to the product of the voltage of a single cell multipliedby the number of cells. For…
Electrical engineering
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