- \(V\) is related to Change in Potential Energy \(\Delta U\) as
\(V =\frac{\Delta U }{ q }\)
From above formula, We get \(1\) Volt potential difference when a change of \(1\) joule of Potential energy is there in moving a charge of \(1\) Coulomb.
Therefore, \(1\) \(Volt\) \(= 1\) \(Joule\) \(Coulomb.\)