Questions
Two cells when connected in series are balanced on 8 m on a potentiometer. If the cells are connected with polarities of one of the cells is reversed, they balance on 2 m. The ratio of e.m.f.'s of the two cells is
detailed solution
Correct option is B
E1E2 = l1 + l2l1 − l2 = 8+28−2= 53Talk to our academic expert!
Similar Questions
An Edison cell and a Iead accumulator when placed in series produce a null deflection at a distance 204 cm in a potentiometer. But when placed in opposition produces null deflection. at a distance of 36 cm. If the e.m.f. of Edison cell is 1 . 4 V, the e.m.f. of lead accumulator is
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