n identical cells, each of emf \( E \) and internal resistance \( \mathrm{r} \), are joined in s...

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n identical cells, each of emf \( E \) and internal resistance \( \mathrm{r} \), are joined in series to form a closed
\( \mathrm{P} \) circuit. One of the cell \( A \) is joined with reversed

W polarity. The potential difference across each cell except \( A \), is :-
(1) \( \frac{2 \varepsilon}{n} \)
(2) \( \frac{\mathrm{n}-1}{\mathrm{n}} \varepsilon \)
(3) \( \frac{n-2}{n} \varepsilon \)
(4) \( \frac{2 n}{n-2} \varepsilon \)
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