Home
Class 12
PHYSICS
Passage - II : Consider a potentiomete...

Passage - II :
Consider a potentiometer arrangement having auniform wire AB of resistance `99Omega`

A driving battery of 10V emf and `1Omega` internal resistance is used in the potentiometer. A cell of unknown emf `E_(1)` and internal resistance of `1Omega` is balanced agains AC length of potentiometer wire.
When jockey is touched with wire AB at point C such that AC = 40 cm, there is no deflection in galvanometer. The emf of cell is

A

3V

B

2.5V

C

2v

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    AAKASH SERIES|Exercise PROBLEMS|94 Videos

  • CURRENT ELECTRICITY

    AAKASH SERIES|Exercise EXERCISE - IA|2 Videos

  • CURRENT ELECTRICITY

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE (LEVEL -II PRACTICE SHEET (ADVANCED) (More than One correct answer Type Questions))|5 Videos

  • CURRENT ELECTRICITY

    AAKASH SERIES|Exercise PROBLEMS (LEVEL-II)|27 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    AAKASH SERIES|Exercise PRACTICE EXERCISEX|42 Videos

Similar Questions

Explore conceptually related problems

In a potentiometer circuit, the emf of driver cell is 2V and internal resistance is 0.5 Omega . The potentiometer wire is 1m long . It is found that a cell of emf 1V and internal resistance 0.5 Omega is balanced against 60 cm length of the wire. Calculate the resistance of potentiometer wire.

The wire of potentiometer has resistance 4 Omega and length 1m. It is connected to a cell of e.m.f. 2V and internal resistance 1 Omega . The current flowing through the potentiometer wire is

In the given potentiometer circuit length of the wire AB is 3 m and resistance is R = 4.5 Omega . The length AC for no deflection in galvanometer is

A uniform potentiometer wire AB of length 100 cm has a resistance of 5Omega and it is connected in series with an external resistance R and a cell of emf 6 V and negligible internal resistance. If a source of potential drop 2 V is balanced against a length of 60 cm of the potentiometer wire, the value of resistance R is

A potentiometer wire is 10 m long and has a resistance of 18Omega . It is connected to a battery of emf 5 V and internal resistance 2Omega . Calculate the potential gradient along the wire.

A potentiometer arrangement is shows in Fig. 6.62 . The driver cell has emf e and internal resistance r . The resistance of potentiometer wire AB is R.F is the cell of emf e//3 and internal resistance r//3 . Balance point (J) can be obtained for all finite value of

A potentiometer wire of length 100 cm has a resistance of 10 Omega . It is connected in series with a resistance R and cell of emf 2 V and negligible resistance. A source of emf 10 mV is balanced against a length of 40 cm of the potentiometer wire. What is the value of R ?

A potentiometer wire of length 100 cm having a resistance of 10 Omega is connected in series with a resistance R and a cell of emf 2V of negligible internal resistance. A source of emf of 10 mV is balanced against a length of 40 cm of the potentiometer wire. What is the value of resistance R ?

A potentiometer wire of length 100 cm having a resistance of 10 Omega is connected in series with a resistance R and a cell of emf 2V of negligible internal resistance. A source of emf of 10 mV is balanced against a length of 40 cm of the potentiometer wire. What is the value of resistance R ?

A potentiometer wire of length 100 cm having a resistance of 10 Omega is connected in series with a resistance R and a cell of emf 2V of negligible internal resistance. A source of emf of 10 mV is balanced against a length of 40 cm of the potentiometer wire. What is the value of resistance R ?