The quantity of electrons contained within a single coulomb of charge equals_______________?
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Answer: A. 6.2 x 1018
Explanation
The elementary charge of a single electron is approximately one point six zero two times ten to the negative nineteenth coulombs. Dividing one coulomb by the individual electron charge yields the exact numerical quantity of approximately six point two four times ten to the eighteenth. This fundamental physical constant bridges microscopic particle physics with macroscopic electrical engineering circuit calculations. The coulomb is the standard International System of Units measurement for electric charge, defined as one ampere multiplied by one second. J.J. Thomson and subsequent physicists experimentally determined the exact charge-to-mass ratio and elementary charge of subatomic electrons. Avogadro constant relationships and Faraday constants are intimately linked to the precise numerical magnitude of a single coulomb.
The value one point six times ten to the nineteenth represents the elementary charge of a single electron, not the total count per coulomb. The value six point two times ten to the twenty-first overestimates the electron count by several orders of magnitude. The value one point six times ten to the negative twenty-seventh approximates the mass of a proton in kilograms, unrelated to charge count.
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