A charge of $10^{-9}c$ is placed on each of the 64 identica…

Physics Electrostatics Potential & Capacitance Capacitance Single Correct MCQ

Published on: September 13, 2026

A charge of $10^{-9}c$ is placed on each of the 64 identical drops of radius 2cm. They are then combined to form a bigger drop. Find its potential

$7.2 \times 10^{3} \nu$

$7.2 \times 10^{2} \nu$

$1.44 \times 10^{2} V$

$1.44 \times 10^{3} \nu$

Text Solution

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The correct answer is:

$V = n^{2/3} v$ ⇒ ⇒ $v = (64)^{2/3} \times 9 \times 10^{9} \times \frac{10^{-9}}{(2 \times 10^{-2})}$

= 7.2 × × 10 3 V

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