Question:
A brass plate having surface area $200 \mathrm{~cm}^{2}$ on one side is electroplated with $0.10 \mathrm{~mm}$ thick silver layers on both sides using a $15 \mathrm{~A}$ current. Find the time taken to do the job. The specific gravity of silver is $10.5$ and its atomic weight is $107.9 \mathrm{~g} / \mathrm{mol}$.
Solution:
