Definitions for quantity, electro-magnetic, practical unit of
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The Standard Electrical Dictionary
Quantity, Electro-magnetic, Practical Unit of
The quantity of electricity passed by a unit current in unit time; the quantity passed by one ampere in one second; the coulomb. It is equal to 3E9 electrostatic absolute units of quantity and to 0.1 of the electro- magnetic absolute unit of quantity. One coulomb is represented by the deposit of .00111815 gram, or .017253 grain of silver, .00032959 gram, or .005804 grain of copper, .0003392 gram, or .005232 grain of zinc. If water is decomposed by a current each coulomb is represented by the cubic centimeters of the mixed gases (hydrogen and oxygen) given by the following formula. ( 0.1738 * 76 * (273 + Cº ) ) / ( h * 273 ) in which Cº is the temperature of the mixed gases in degree centigrade and h is the pressure in centimeters of mercury column; or by ( 0.01058 * 30 (491 + Fº - 32) ) / (h * 491 ) for degrees Fahrenheit and inches of barometer. [Transcriber's note: 6.24150962915265E18 electrons is one coulomb.]
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