The potential difference between two points is said to be $1\text{ V}$ when
A$1\text{ J}$ of work is done in moving $1\text{ C}$ of charge between them
B$1\text{ C}$ of charge moves in $1\text{ s}$
C$1\text{ A}$ of current flows through a conductor
D$1\text{ J}$ of work is done in moving $1\text{ A}$ of current
Answer & Solution
Correct answer: A. $1\text{ J}$ of work is done in moving $1\text{ C}$ of charge between them
By definition, $1\text{ volt}$ is the potential difference when $1\text{ joule}$ of work is required to move $1\text{ coulomb}$ of charge between two points.
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