Question

15. When two cells of emfs. E and E2
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.
[Ans: 1.25]​

Answer 1

Explanation:

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