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A potentiometer wire of length L and a r...

A potentiometer wire of length L and a resistance r are connected in series with a battery of e.m.f. `E_(0)` and a resistance `r_(1)`. An unknown e.m.f. is balanced at a length l of the potentiometer wire. The e.m.f. E will be given by

A

`(LE_(0)r)/((r + r_(1))l)`

B

`(LE_(0)r)/(lr_(1))`

C

`(E_(0)r)/((r+r_(1)).(l)/(L)`

D

`(E_(0)l)/(L)`

Text Solution

Verified by Experts

The correct Answer is:
C
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