Question

In an electroplating experiment, m gm of silver is deposited when 4 ampere of current flows for 2 minute. The amount (in gm) of silver deposited by 6 ampere of current for 40 second will be

• A. 4 m
• B. m/2
• C. m/4
• D. 2m

Answer 1

Answer: (B)

m/2

Answer 2

By using

$m = zit \Rightarrow \frac{m_{1}}{m_{2}} = \frac{i_{1}t_{1}}{i_{2}t_{2}} \Rightarrow \frac{m}{m_{2}} = \frac{4 \times 2 \times 60}{6 \times 40} \Rightarrow m_{2} = m/2$