Six identical capacitors, each of 1muF a...

Six identical capacitors, each of `1muF` are joined in parallel and the combination is put across a battery of e.m.f. 2V. Now, the battery is disconnected and the capacitors are joined in series. The total energy are potential difference across the series combination is

`2muJ "and" 2V`

`2 muJ` and 12 V

`12 muJ` and 2V

`12 muJ` and 12V

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