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One ampere of electric current equals what rate of charge flow?
AOne joule per second
BOne coulomb per second
COne volt per second
DOne coulomb per volt
Answer & Solution
Correct answer: B. One coulomb per second
1. Electric current measures how fast charge moves past a point.
2. The SI unit of charge is the coulomb and the SI unit of time is the second.
3. One ampere is therefore one coulomb of charge flowing each second.
4. One joule per second is a rate of energy, which is power rather than current.
_Source: OpenStax Chemistry (CC BY 4.0), Chs 7 and 17, section 17.1 Balancing Oxidation-Reduction Reactions_
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