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 epsilon_(1) and epsilon_(2)(epsilon_(2) lt epsilon_(1)) are joined as shown in figure : When a potentiometer is connected between X and Y it balances for 300 cm length against epsilon_(0) . On conntecting the same potentiometer between X and Z it balances for 100 cm length against epsilon_(1) and epsilon_(2) . Then the ratio (epsilon_(2))/(epsilon_(1)) is :

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

Tow cells of e.m.f E_(1) and E_(2) are joined in series and the balancing length of the potentiometer wire is 625 cm. If the terminals of E_(1) are reversed , the balancing length obtained is 125 cm. Given E_(2) gt E_(1) ,the ratio E_(1) : E_(2) willbe

Two primary cells of emfs E_(1) and E_(2) are connected to the potentiometer wire AB as shown in the figure . If the balancing lengths for the two combinations of the cells are 250 cm and 400 cm , find the ratio of E_(1) and E_(2) .

A cell is balanced at 100cm of a potentiometer wire when the total length of the wire is 400cm .If the length of the potentiometer wire is increased by 100cm ,then the new balancing length for the cell will be

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 emf E and internal resistance r connected in the secondary gets balanced against length l of potentiometer wire. If a resistance R is connected in parallel with the cell, then the new balancing length for the cell will be