Question

N identical cells each of emf e and internal resistance r are connected in series to a resistor are reduced an expression for the internal resistance r of one cell in terms of the current i flowing through the circuit how does the internal resistance of the cell vary with temperature

Answer 1

https://www.askiitians.com/iit-jee-electric-current/emf-of-a-cell/

Answer 2

Answer:

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