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According to the Faraday law of electrolysis, the mass deposited at electrode is proportional to :
A
$m \propto I^2$
B
$m \propto Q$
C
$m \propto Q^2$
D
'm' does not depend on Q
Detailed Solution
Faraday's first law: the mass of a substance deposited at an electrode is directly proportional to the quantity of electricity (charge) passed: $m = ZQ = ZIt$, where Z is the electrochemical equivalent.
So $m \propto Q$ (and $m \propto I$ for a fixed time).
So $m \propto Q$ (and $m \propto I$ for a fixed time).