24 cells of each emf 4V are connected in series. Among them if 5 cells are conne

Question

24 cells of each emf 4V are connected in series. Among them if 5 cells are connected wrongly, the effective emf of the combination is

Options:

A . 18V

B . 56V

C . 24V

D . 4V

Answer: Option B
:
B

E^{'} = (N - 2 n) E = (24 - 2 \times 5) E = 14 E = 14 \times 4 E^{'} = 56 V

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