Home
Class 12
PHYSICS
The length of a potentiometer wire is l....

The length of a potentiometer wire is l. A cell of emf E is balanced at a length 1/3 from the positive end of the wire. If the length of the wire is increased by l/2. At what distance will the same cell give a balance point?

A

`(2l)/(3)`

B

`(l)/(2)`

C

`(l)/(6)`

D

`(4l)/(3)`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    VMC MODULES ENGLISH|Exercise IN-CHAPTER EXERCISE-F|10 Videos

  • CURRENT ELECTRICITY

    VMC MODULES ENGLISH|Exercise IN-CHAPTER EXERCISE-D|9 Videos

  • CAPACITORS

    VMC MODULES ENGLISH|Exercise JEE Advance ( Archive ) LEVEL 48|1 Videos

  • DC CIRCUIT

    VMC MODULES ENGLISH|Exercise JEE ADVANCED ARCHIVE|68 Videos

Similar Questions

Explore conceptually related problems

If the resistance of potentiometer wire is 15r then calculate the balance length l

If the length of potentiometer wire is increased, then the accuracy in the determination of null point

Figure shows a potentiometer circuit, a cell of emf E_1 is balanced by length l' of the potentiometer wire. If this cell is replaced by another of emf E_2 , it is found that total length of potentiometer wire has to be increased by 50%, in order to have the same balance length (l'). Then E_1//E_2 is______.

Figure shows a potentiometer circuit, a cell of emf E_1 is balanced by length l' of the potentiometer wire. If this cell is replaced by another of emf E_2 , it is found that total length of potentiometer wire has to be increased by 50%, in order to have the same balance length (l'). Then E_1//E_2 is______.

In a potentiometer arrangement, a cell of emf 1.25 V gives a balance point at 35.0 cm length of the wire. If the cell is replaced by another cell and the balance point shifts to 63.0 cm, what is the emf of the second cell ?

The length of a steel wire is l_(1) when the stretching force is T_(1) and l_(2) when the stretching force is T_(2) . The natural length of the wire is

The balancing length for a cell in a potentiometer experiment is 45 cm. In the balanced condition, the current through the potentiometer wire is 2 A. If the total length of the potentiometer wire is 1 m and its total resistance is 60Omega , the emf of the cell is (in Volts) _________.

In a potentiometer arrangement, a cell of emf 1.5 V gives a balance point at 27 cm length of wire. If the cell is replaced by another cell and balance point shifts to 54 cm, the emf of the second cell is :

A 10 m long potentiometer wire carries a steady current. A standard cell of emf 1.018 V is balanced against a length of 254.5 cm of the wire. What is the potential gradient across the potentiometer wire ?

In potentiometer experiment, null point isobtained at a particular point for a cell on potentiometer wire x cm long. If the lengthof the potentiometer wire is increasedwithout changing the cell, the balancing length will (Driving source is not changed)