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19. Electric Potential And Capacitance question bank (Physics)

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Q1.

$n$ small spherical drops of the same size, each charged to a potential $V$, coalesce to form a single big drop. The potential of the big drop is:

(A)
$nV$
(B)
$V/n$
(C)
$n^{1/3}V$
(D)
$n^{2/3}V$
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Q2.

Initially, $n$ identical capacitors are joined in parallel, and are charged to potential $V$. Now they are separated and joined in series. Then:

(A)
potential difference and total energy of the combination remain the same
(B)
potential difference remains the same and energy increases $n$ times
(C)
potential difference becomes $nV$ and energy remains the same
(D)
potential difference is $nV$ and energy increases $n$ times.
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