Two cells of emf 3V and 5V and internal resistance `r_(1)` and `r_(2)` respectively are in series with an external resistance R. if the p.d. across 1 st cell is zero, then R is

Two cells each of emf E and internal resistacne r_(1)" and "r_(2) respectively are conneted in series with an external resistance R. The potential defference between the terminats of the first cell will be zero when R equal to

Two cells of emf E each and internal resistance r_(1) and r_(2) are connected in series across a load resistance R. If potential difference across the first cell is zero, then find the relation between R, r_(1) and r_(2)

Two cells of emf E each and internal resistance r_(1) and r_(2) are connected in series across a load resistance R. If potential difference across the first cell is zero, then find the relation between R, r_(1) and r_(2)

Two cells of emf E each and internal resistance r_(1) and r_(2) are connected in series across a load resistance R. If potential difference across the first cell is zero, then find the relation between R, r_(1) and r_(2)

Two cells each of emf e but internal resistances r_1 and r_2 are connected in series through an external resistance R. IF the potential difference across the first cell is zero while current flows,the relation of R in terms of r_1 and r_2 is

Two cells each of emf e but internal resistance r_1 and r_2 are connected in series through an external resistance R. IF the potential difference across the first cell is szero while current flow, the relation of R in terms of r_1 and r_2

Two cells each emf e but of internal resistance r_1 and r_2 are connected in series through and external resistance R. IF the potential difference across the first cell is zero while current flows the value of R in terms of r_1 and r_2 is

Two cells of emf 2E and E with internal resistance r_(1) and r_(2) respectively are connected in series to an external resistor R (see figure). The value of R, at which the potential difference across the terminals of the first cell becomes zero is

Two cells with same e.m.f. .E. and different internal resistances r_(1) and r_(2) are connected in series to an external resistance .R.. The value of R so that the p.d. across the first cell be zero is