Q.
In copper voltameter, mass deposited in 30 s is $m$ gram. If the time current is as shown in figure, ECE of copper is
A) $m$
B) $m/2$
C) 0.6 $m$
D) 0.1$\ m$
Explanation
(b) $z = m/It.$From graph, $It = Area\ OABC$
$= \frac{1}{2}(10 + 30) \times \frac{100}{1000} = 2$
$\therefore\ z = m$/2 = $- 0.5\ m$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.