Q. How much current should be passed through a silver voltmeter to deposit 200 gm of silver per hour on the cathode? (Faraday constant =96500 $C/mol$ and relative atomic mass of silver is 108)

A) $50\ mA$
B) $50\ A$
C) $15\ mA$
D) $15\ A$
Explanation

(a) $m = ZIt$
$\frac{200}{100} = \frac{108}{96500} \times I \times 60 \times 60$
$I = 50mA$

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.