Q106 / 120 · VITEEE 2014 · Physics

If 1000 droplets each of potential $1 \mathrm{~V}$ and radius $r$ are mixed to form a big drop. Then, the potential of the drop as compared to small droplets, will be

A
$1000 \mathrm{~V}$
B
$800 \mathrm{~V}$
Correct answer
C
$100 \mathrm{~V}$
D
$20 \mathrm{~V}$

Solution

Potential of big drop $=\mathrm{q} \times \mathrm{n}^{2 / 3}=100 \mathrm{~V}$

Hence, the correct answer is option: 'C'.

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