The balancing length of a potentiometer wire is 220cm when a cell of emf 1.1v is used in the secondary circuit.If it is replaced by a cell of emf 2.5v the balancing length becomes

The balancing length on a potentiometer wire with a cell of emf 2V and internal resistance 1Omega connected in the secondary circuit with no load is 200cm . If a resistor of 19Omega is connected parallel to the cell, the balancing length

In an experiment to find the internal resistance of a cell by a potentiometer, a balance was obtained for 50 cm length of the potentiometer wire, with a cell of e.m.f. 2V. When the cell was shunted by a resistance of 2 Omega , the balancing length of the potentiometer wire was 40 cm. What was the internal resistance of the cell ?

A potentiometer wire of length 1 m is connected to a driver cell of emf 3 V. When a cell of emf 1.5V is used in the secondary circuit, the balance points is found to be 60 cm. On replacing this cell with a cell of inknown emf, the balance points shifts to 80 cm. (i) Calculate unknown emf of the cell. (ii) Explain with reason, whether the circuit works, if the drivere cell is replaced with a cell of emf 1 V. (iii) Does the high resistance R, used in the secondary circuit affect the balance point? Justify your answer.

In a potentiometer experiment when a battery of emf 2V is included in the secondary circuit the balance point is 500 cm. Find the balancing length of the same end when a cadimum cell of emf 1.018V is connected to the secondary circuit.

A cell of emf (E) and internal resistance (r) is balanced across (l) length of potentiometer wire. If another cell of emf 2E and internal resistance (2r) is connected in parallel to the first cell , then the balancing length will be

In potentiometer experiment, a cell of emf 1.25 V gives balancing length of 30 cm. If the cell is replaced by another cell, then balancing length is found to be 40 cm. What is the emf of second cell ?

In a potentiometer the balancing length of the wire is found to be 2.5 m for a cell of e.m.f. 1.5V . Find the balancing length of the wire fore another cell of e.m.f. 1.2 V on the same potentiometer.

3V poteniometer used for the determination of internal resistance of a 2.4V cell. The balanced point of the cell in open circuit is 75.8cm. When a resistor of 10.2Omega is used in the external circuit of the cell the balance point shifts to 68.3cm length of the potentiometer wire. The internal resistance of the cell is