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In the series combination of n cells eac...

In the series combination of n cells each cell having emf `epsilon` and internal resistance r. If three cells are wrongly connected, then total emf and internal resistance of this combination will be

A

`n epsilon,(nr-3r)`

B

`(n epsilon-2 epsilon)nr`

C

`(n epsilon-4 epsilon),nr`

D

`(n epsilon-6 epsilon), nr`

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