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N identical cells, each of emf e and int...

N identical cells, each of emf e and internal resistance r are joined in series. Out of these, n ceils are wrongly connected, i.e. their terminals are connected in reverse order as required for series connection. If `epsilon_0` be the emf of the resulting battery and `r_0` be its internal resistance then for `nltN//2`

A

a)`epsilon_0=(N-n)epsilon,r_0=(N-n)r`

B

b)`epsilon_0=(N-n)epsilon,r_0=(N-2n)r`

C

c)`epsilon_0=(N-2n)epsilon,r_0=Nr`

D

d)`epsilon_0=(N-n)epsilon,r_0=Nr`

Text Solution

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The correct Answer is:
C
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