In a potentiometer experiment of a cell of cmf 
gives balancing length of 
. If the cell is replaced by another cell, balancing length is found to be 
. What is the emf of second cell?
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
As 
where 
and 
are the emfs of two cells and 
and 
are the corresponding balancing lengths of the potentiometer wire.
Here, 
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