$Ag^{+} + e^{-} \to Ag_{(s)}$
$1\,F = 1$ મોલ $Ag$
$1$ મોલ $Ag = 96500$ કુલોમ્બ
$\therefore {\text{0}}{\text{.125}}$ મોલ $Ag = \frac{{0.125 \times 96500}}{1}\,\,{\text{ = 12065}}{\text{.5}}$ કુલોમ્બ
હવે , ${\text{Q = I }} \times {\text{ t }}\,\therefore t = \frac{{12062.5}}{{241.25}} = 50$ સેકન્ડ
$Cr\, | \,Cr^{3+}_{(0.1\,M)}\,||\, Fe^{2+}_{(0.01\, M)}\,|\, Fe$