A potentiometer has uniform potential gradient across it. Two cells connected in series (i) to support each other and (ii) to oppose each other are balanced over $6m$ and $2m$ respectively on the potentiometer wire. The e.m.f.'s of the cells are in the ratio of

Question

Dr. Abubacker · Accepted Answer

(d) $\frac{E_{1}}{E_{2}} = \frac{l_{1} + l_{2}}{l_{1} - l_{2}} = \frac{(6 + 2)}{(6 - 2)} = \frac{2}{1}$

Q. A potentiometer has uniform potential gradient across it. Two cells connected in series (i) to support each other and (ii) to oppose each other are balanced over $6m$ and $2m$ respectively on the potentiometer wire. The e.m.f.'s of the cells are in the ratio of

Explanation

Reviewed by Dr. Abubacker

Want more practice?