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  • Twenty seven drops of water of the same size are equally and similarly changed. They are then united to from a bigger drop. By what factor will the electrical potential changes. -<div class='qn

Twenty seven drops of water of the same size are equally and similarly changed. They are then united to from a bigger drop. By what factor will the electrical potential changes. -

Option: 1

9 \text { times }


Option: 2

27 \text { times }


Option: 3

6 \text { times }


Option: 4

3 \text { times }


Answers (1)

best_answer

let \mathrm{V_B } is the potential of bigger drop and \mathrm{V_S } potential of small drop.
\mathrm{use, \quad v_B=n^{2 / 3} v_s- n=27. }.........(1)
Put in (1) we get-
\mathrm{\begin{aligned} & V_B=(27)^{2 / 3} V_s \\ & V_B=\left(3^3\right)^{2 / 3} v_s=3^2 v_s \\ & V_B=9 V_s \rightarrow 9 \text { times. Ans } \end{aligned} }

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Ritika Jonwal

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