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coulomb |
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coulomb (k  `lŏm) [for C. A. de Coulomb Coulomb, Charles Augustin de (k`lŏm, k..... Click the link for more information. ], abbr. coul or C, unit of electric charge charge, property of matter that gives rise to all electrical phenomena (see electricity ). The basic unit of charge, usually denoted by e, is that on the proton or the electron ; that on the proton is designated as positive (+e ..... Click the link for more information. . The absolute coulomb, the current U.S. legal standard, is the amount of charge transferred in 1 second by a current of 1 ampere ampere (ăm`pēr), abbr. amp or A, basic unit of electric current. ..... Click the link for more information. ; i.e., it is 1 ampere-second. A standard unit of electrical charge. Pronounced "kool-ahm," one coulomb (C) is equivalent to one amp of current flowing through a conductor for one second. It is also equal to 6.25 quintillion electrons (6.25 X 10 to the 18th). From French physicist Charles de Coulomb (1736-1806), who measured the behavior of electrical charges. See capacitance. |
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