Q. 545.0( 1 Vote )
The potentiometer
Answer :
Concepts/Formula used:
Wheatstone bridge:
The condition for no deflection through the galvanometer is
Here 
and 
.
When no deflection occurs, 
Let the resistance per cm of the potentiometer wire be be ρ .
Hence, 
and 
.
Using the equation when there is no deflection for a Wheatstone bridge/potentiometer, we have
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