Q. Twenty seven drops of same size are charged at 220 V each. They combine to form a bigger drop. Calculate the potential of the bigger drop.
A) 1320 V
B) 1520 V
C) 1980 V
D) 660 V
Explanation
[Solution] $V = n^{2/3}v = 27^{2/3} \times 220 = 9 \times 220 = 1980$ V. Answer (3).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.