Two cells of e.m.f.'s `E_(1) and E_(2)` where `E_(1) gt E_(2)`, are connected in series so as to assist each other, the balancing length is 2.7m . When the cells are connected in series so as to oppose each other, the balancing length is found to be 0.3m . What is the ratio of their e.m.f.'s ?

When two cells of e.m.f. 1.5 V and 1.1 V connected in series are balanced on a potentiometer, the balancing length is 260 cm. The balancing length, when they are connected in opposition is (in cm)

Two cells of E.M.F. E_(1) and E_(2)(E_(2)gtE_(1)) are connected in series in the secondary circuit of a potentiometer experiment for determination of E.M.F. The balancing length is found to be 825 cm. Now when the terminals to cell E_(1) are reversed, then the balancing length is found to be 225 cm. The ratio of E_(1) and E_(2) is

Two batteries of e.m.f. E_(1) and E_(2) and internal resistance r_(1) and r_(2) are connected in parallel. Determine their equivelent e.m.f.

Two cells of emfs E_(1) and (E_(2) (E_(1) gt E_(2)) are connected as shows in Fig. 6.45 . When a potentiometer is connected between A and B , the balancing length of the potentiometer wire is 300 cm . On connecting the same potentiometer between A and C , the balancing length is 100 cm . The ratio E_(1)//E_(2) is

Two cells of emf E_(1) and E_(2) are to be compared in a potentiometer (E_(1) gt E_(2)) . When the cells are used in series correctly , the balancing length obtained is 400 cm. When they are used in series but E_(2) is connected with reverse polarities, the balancing obtaiend is 200cm. Ratio of emf of cells is

In a potentiometer experiment the balancing length is 8 m, when the two cells E_(1) and E_(2) are joined in series. When the two cells are connected in opposition the balancing length is 4m. The ratio of the e.m.f. of two cells (E_(1)//C_(2)) is

A cell of e.m.f. 1.2 V is balanced by 150 cm of potentiometer wire. When the cell is shunted by a resistance of 4 Omega , the balancing length is reduced by 30 cm. What is the internal resistance of the cell ?

The balancing lengths for the cells of e.m.f. E_(1) and E_(2) are l_(1) and l_(2) respectively. If they are connected separately then