Two cells - having the same e.m.f- are connected inseries through an external resistance RCells haveinternal resistances r 1 and r2 (r1 > r2) respectivelyWhenthe circuit is closed - the potential difference across thefirst cell is zeroThe value of R is [2006][2007]

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Two cells - having the same e.m.f- are connected inseries through an external resistance RCells haveinternal resistances r 1 and r2 (r1 > r2) respectivelyWhenthe circuit is closed - the potential difference across thefirst cell is zeroThe value of R is [2006][2007]