Q. A current $I$ is passed for a time $t$ through a number of voltmeters. If $m$ is the mass of a substance deposited on an electrode and $z$ is its electrochemical equivalent, then
A) $\frac{zIt}{m} = constant$
B) $\frac{z}{mIt} = constant$
C) $\frac{I}{zmt} = constant$
D) $\frac{It}{zm} = constant$
Explanation
(a) $m = Zit \Rightarrow \frac{m}{Zit} = 1\lbrack constant\rbrack$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.