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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"epsi,(nr-3r)`

B

`("n"epsi-2r),nr`

C

`("n"epsi-4epsi),nr`

D

`("n"epsi-6epsi),nr`

Text Solution

Verified by Experts

The correct Answer is:
D
Since due to wrong connection of each cell the total emf reduced to `2epsilon` then for wrong connected of three cells the total emf will reduced to `(nepsi-6epsi)` whereas the total or equivlent of cell combination will be nr.
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Knowledge Check

  • If n cells each of emf E and internal resistance rare connected in parallel, then the total emf and internal resistances will be

    A
    `epsi, (r)/(n)`
    B
    `epsi,nr`
    C
    `"n"epsi,(r)/(n)`
    D
    `"n"epsi,nr`

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