A series combination of $n_1$ capacitors, each of value $C_1$, is charged by a source of potential difference $4\,V$. When another parallel combination $n_2$ capacitors, each of value $C_2$, is charged by a source of potential difference $V$, it has the same (total) energy store in it, as the first combination has. The value of $C_2$, in terms of $C_1$, is then

  • A

    $\frac{{2{C_1}}}{{{n_1}{n_2}}}$

  • B

    $16\frac{{{n_2}}}{{{n_1}}}{C_1}$

  • C

    $2\frac{{{n_2}}}{{{n_1}}}{C_1}$

  • D

    $\frac{{16{C_1}}}{{{n_1}{n_2}}}$

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