Q. 154.8( 11 Votes )

A resistance of R

Answer :

When the slider is in the middle the resistance of each part of the potentiometer becomes R0/2


The resistance of the parallel combination of R and R0/2 is,


The equivalent resistance between A and C



On solving , We get



The equivalent resistance of the circuit becomes,





The net current in the circuit is,



Voltage across R is,




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