JEE Previous Year Question

512 identical drops of mercury are charged to a potential of 2 V each. The drops are joined to form a single drop. The potential of this drop is _____ V.

Topic: JEE PYQ

Answer: 128. Full step-by-step solution below.

Correct answer: 128

Solution

(128) JEE Main 2021
Let charge on each drop = q
Radius = r


Radius of bigger



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