JEE Main 2022 · 30 Jun · Shift 1 · Physics Q55

← JEE Main 2022 · 30 Jun · Shift 1

PhysicsInteger+4 / -1Question 55 of 90

Eight similar drops of mercury are maintained at 12 V each. All these spherical drops combine into a single big drop. The potential energy of bigger drop will be ______ E. Where E is the potential energy of a single smaller drop.

Your answer

Answer and worked solution

Official answer: 32

Merging 8 drops. $Q=8q$ , $R=2r$ ; $U\propto\frac{Q^2}R=\frac{64}2=32$ times.

Answer: 32

Topics:Potential energy of charge systems Conductors and charge distribution

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JEE Main 2022 · 30 Jun · Shift 1, Physics question 55