In the circuit shown, a four-wire potentiometer is made of a 
long wire, which extends between 
and 
. The resistance per unit length of the potentioneter wire is 
. If an ideal voltmeter is connected as shown with jockey 
at 
from end 
, the expected reading of the voltmeter will be
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
As 
Resistance of the wire, 
Total resistance of the circuit
Current in the circuit, 
Reading of the voltmeter, 
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