Question

N cells of emf e1 e2 e3 are internal resistance r1 r2 r3

Answer 1

If cells are connected in parallel with same poles in same direction then net emf = max(emf)=3e
because,
potential difference across a parallel circuit is same.
And,
Net Resistance = 1r
Current flowing = 3e/r

If the cells are connected in series the net emf will be = 6e
Resistance will be = 6r
Current flowing will be = e/r

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