When cells are arranged in series

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

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

(A): A series combination of cells is used when their internal resistance is much smaller than external resistance. (R ) When cells are connected is series the current through external resistance is I=(nE)/(R+nr)

When two cells of emfs. E_1 and E_2 are connected in series so as to assist each other, their balancing length on a potentiometer is found to be 2.7 m. When the cells are connected in series so as to oppose each other, the balancing length is found to be 0.3 m. Compare the emfs of the two cells.

If the epithelial cells are arranged in layers, it is called

Fill in the blanks : A ……….. Is formed when two or more cells are connected in series …………

In taxonomic hierarchy, various categories are arranged in …... series.