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‘n’ identical cells, each of e.m.f ‘E’ and internal resistance ‘ $r_{1}$ ’, are formed in series to form a closed circuit. One cell ‘A’ is joined with reversed polarity. The potential difference across each cell, expcept A, is

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2En

n−1nE

n−2nE

2nn−2E

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detailed solution

Correct option is A

i=(n−2)Enr VB−VA=−ir+E =E−(n−2)Enrr =2En

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‘n’ identical cells, each of e.m.f ‘E’ and internal resistance ‘r1 ’, are formed in series to form a closed circuit. One cell ‘A’ is joined with reversed polarity. The potential difference across each cell, expcept A, is

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Ready to Test Your Skills?

free study material

‘n’ identical cells, each of e.m.f ‘E’ and internal resistance ‘ $r_{1}$ ’, are formed in series to form a closed circuit. One cell ‘A’ is joined with reversed polarity. The potential difference across each cell, expcept A, is