A potentiometer wire of length L and a resistance r are connected in series with a battery of e.m.f. E and a resistance r_(1). An unknown e.m.f. E_(o) is balanced at a length l of the potentiometer wire. The e.m.f. E will be given by

A potentiometer wire of length L and a resistance r are connected in s

1.	A potentiometer wire of length L and a resistance r are connected in series with a battery of e.m.f. E and a resistance r_(1). An unknown e.m.f. E_(o) is balanced at a length l of the potentiometer wire. The e.m.f. E will be given by
Answer» `(LE_(o)r)/((r+r_(1))l)` `(LE_(o)r)/(lr_(1))` `(E_(o)r)/((r+r_(1))).(l)/(L)` `(E_(o)l)/(L)` ANSWER :C

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A potentiometer wire of length L and a resistance r are connected in series with a battery of e.m.f. E and a resistance r_(1). An unknown e.m.f. E_(o) is balanced at a length l of the potentiometer wire. The e.m.f. E will be given by

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