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Why is one Coulomb equal to 6.24 *10^18 ? This number is weird . why wasn't it a nice number like 10^20. I have some guesses about this.

Qmechanic
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1 Answers1

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A Coulomb is the charge transported by a constant current of one ampere in one second. One ampere and one second are very nice numbers. The details of the charge carriers are usually not important when working with electricity.