Question

For depositing 1 gm of Cu in copper voltameter on passing 2 amperes of current, the time required will be (For copper Z = 0.00033 gm/C)

• A. Approx. 20 minutes
• B. Approx. 25 minutes
• C. Approx. 30 minutes
• D. Approx. 35 minutes

Answer 1

Answer: (B)

Approx. 25 minutes

Answer 2

$m = Zit$ ⇒ $1 = 0.00033 \times 2 \times t$

∴ $t = \frac{1}{0.00066 \times 60}min = \frac{100000}{3960} \approx 25min$