A potentiometer circuit has been set up for findingthe internal resistance of a given cell. The mainbattery, used across the potentiormeter wire, has anemf of 2.0 V and a negligible internal resistance.The potentiometer wire itsel is 4 m long. Whenthe resistance, R connected across the given cell,has values of (i) Infinity, () 9.5 2, the 'balancinglengths', on the potentiometer wire are found to be3 m and 2.85 m, respectively. The value of internalresistance of the cell isAIPMT-2014(2) 0.95 2(4) 0.75 Ω(1) 0.25 Ω(3) 0.5 2

A potentiometer circuit has been set up for findingthe internal resist

1.	A potentiometer circuit has been set up for findingthe internal resistance of a given cell. The mainbattery, used across the potentiormeter wire, has anemf of 2.0 V and a negligible internal resistance.The potentiometer wire itsel is 4 m long. Whenthe resistance, R connected across the given cell,has values of (i) Infinity, () 9.5 2, the 'balancinglengths', on the potentiometer wire are found to be3 m and 2.85 m, respectively. The value of internalresistance of the cell isAIPMT-2014(2) 0.95 2(4) 0.75 Ω(1) 0.25 Ω(3) 0.5 2
Answer» A potentiometer circuit has been set up for findingthe internal resistance of a given cell. The mainbattery, used across the potentiormeter wire, has anemf of 2.0 V and a negligible internal resistance.The potentiometer wire itsel is 4 m long. Whenthe resistance, R connected across the given cell,has values of (i) Infinity, () 9.5 2, the 'balancinglengths', on the potentiometer wire are found to be3 m and 2.85 m, respectively. The value of internalresistance of the cell isAIPMT-2014(2) 0.95 2(4) 0.75 Ω(1) 0.25 Ω(3) 0.5 2