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N identical cells each of emf e and internal resistance r are joined in series to form a closed circui. The potential difference across any one cell is

N identical cells each of emf e and internal resistance r are joined in series to form a closed circui. The potential difference across any one cell is 

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Grade:11

1 Answers

Eshan
askIITians Faculty 2095 Points
5 years ago
Dear student,


Applying Kirchoff’s voltag law to the whole circuit gives

NE-N(ir)=0
\implies i=\dfrac{E}{r}
Hence potential difference across each battery =E-ir=E-\dfrac{E}{r}r=0

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