Question

The quantity which is denoted by joule/coulomb is

Answer 1

1. The quantity which is denoted by joule/coulomb is the Potential difference. It is denoted by V.
2. The electrostatic potential difference between two points in an electric field is defined as the amount of work done per unit of a positive test charge in moving it from one point to the other (without acceleration) against the electrostatic force due to the electric field.

$V=\frac{W}{Q}=\frac{J}{C}$

3. SI unit of potential difference is volt (V).

Hence, the quantity which is denoted by joule/coulomb is the potential difference.