Q 12-02-098JEE MainJEE Main 2023 (12 Apr, Shift 1)Easy
$64$ identical drops each charged up to potential of $10\ \text{mV}$ are combined to form a bigger drop. The potential of the bigger drop will be ______ mV.
Numerical value type. Enter your answer.
Answer: 160
$R=4r$ and $Q=64q$: $V=\dfrac{kQ}{R}=\dfrac{64}{4}\cdot\dfrac{kq}{r}=16\times10=160\ \text{mV}$.
Solution by Sreeraj P, M.Sc Physics