Question

n identical cells, each of emf `epsilon` and internal resistance r, are joined in series to from a closed circuit. One cell a is joined with reversed polarity. The potential difference across each cell, except A, is
A. `(2epsi)/(n)`
B. `(n-1)/(n)epsi`
C. `(n-2)/(n)epsi`
D. `(2n)/(n-2)epsi`

Answer 1

Correct Answer - A

`V_(r)=E-Ir`
`V_(r)=E-((n-2)E)/(nr)xxr`
`V_(r)=E-(nE)/(n)+(2E)/(n)`