Published by:
CGP EDU Academic Team
Published on: August 14, 2026
An ideal battery of 
and resistance 
are connected in series in the primary circuit of a potentiometer of length 
and resistance 
. The value of 
, to give a potential difference of 
across 
of potentiometer wire, is :
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
Let current flowing in the wire is 
.
If resistance of 
length of wire is 
then 
. d. on wire 
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