State Faraday’s first law of electrolysis.

Farady’s 1st law :
The amount of a substance discharged at an electrode during electrolysis, is directly proportional to quantity of current passing through its solution or melt during electrolysis.
$\mathrm{W}\mathrm{\&}\mathrm{Q}\mathrm{W}=\mathrm{eIt}(\because \mathrm{Q}=\mathrm{It})$
w = wt of substance discharged
e = electro chemical equivalent
I = current in amp $\Rightarrow$ t = time in sec