Q. A spherical drop of mercury having a potential of $2.5\ V$ is obtained as a result of merging 125 droplets. The potential of constituent droplets would be
A) $1.0\ V$
B) $0.5\ V$
C) $0.2\ V$
D) $0.1\ V$
Explanation
(d) $V = n^{2/3}v \Rightarrow 2.5 = (125)^{2/3}v \Rightarrow v = \frac{2.5}{25} = 0.1\ volt$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.