What current is to be passed for `0.25` sec for deposition of certain weight of metal which is equal to its electrochemical equivalent ?

Options

A. `400 A`
B. 100 A
C. 200 A
D. `200 A`

Answer

A

Explanation

From Faraday’s 1st law of electrolysis, , w = zit where w = amount of substance deposited, z = electrochemical equivalent, i = current in ampere, t = time in second.
Given w = z or, it = 1
or `I, 1//t = 1/0.25 = 4 A`