A spherical drop of mercury having a potential of $2.5\, V$ is obtained as a result of merging $125$ droplets. The potential of constituent droplets would be........$V$
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(d) $V = {n^{2/3}}v$ $==>$ $2.5 = {(125)^{2/3}}v$ $==>$ $V = \frac{{2.5}}{{25}} = 0.1\,volt$
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