Home
Class 12
PHYSICS
In a potentiometer experiment it is foun...

In a potentiometer experiment it is found that no current passes through the galvanometer when the terminals of the cell are connected across `0.52 m` of the potentiometer wire. If the cell is shunted by a resistance of `5Omega` balance is obtained when the cell connected across` 0.4m` of the wire. Find the internal resistance of the cell.

A

`2Omega`

B

`2.5 Omega`

C

`1 Omega`

D

`1.5 Omega`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    RESONANCE ENGLISH|Exercise High Level Problems (HIP)|19 Videos
  • CURRENT ELECTRICITY

    RESONANCE ENGLISH|Exercise Exrcies-3(PART-1)|22 Videos
  • COMMUNICATION SYSTEMS

    RESONANCE ENGLISH|Exercise Exercise 3|13 Videos
  • DAILY PRACTICE PROBLEM

    RESONANCE ENGLISH|Exercise DPP.No.71|1 Videos

Similar Questions

Explore conceptually related problems

In a potentiometer experiment, the galvanometer shows no deflection when a cell is connected across 60 cm of the potentiometer wire. If the cell is shunted by a resistance of 6 Omega , the balance is obtained across 50 cm of the wire. The internal resistance of the cell is

For a cell of e.m.f. 2 V , a balance is obtained for 50 cm of the potentiometer wire. If the cell is shunted by a 2Omega resistor and the balance is obtained across 40 cm of the wire, then the internal resistance of the cell is

It is observed in a potentiometer experiment that no current passes through the galvanometer, when the terminals of the potentiometer, wire. On shunting the cell by a 2Omega resistance, the balancing length is reduced to half. The internal resistance of the cell is:-

A Daniel cell is balanced on 125 cm length of a potentiometer wire. Now the cells is short-circuited by a resistance 2 ohm and the balance is obtained at 100 cm . The internal resistance of the Dainel cell is

The reading on a high resistance voltmeter when a cell is connected across it is 3 V. When the terminals of the cell are also connected to a resistance of 4 Omega , then the voltmeter reading drops to 1.2 V. Find the internal resistance of the cell.

In a potentiometer the balancing with a cell is at length of 220cm. On shunting the cell with a resistance of 3Omega balance length becomes 130cm. What is the internal resistance of this cell.

The e.m.f. of a standard cell balances across 150 cm length of a wire of potentiometer. When a resistance of 2Omega is connected as a shunt with the cell, the balance point is obtained at 100cm . The internal resistance of the cell is

In order to determine the internal resistance of a primary cell by means of potentiometer the emf of the battery connected across the ends of the potentiometer wire should be

In an experiment to measure the internal resistance of a cell by a potentiometer, it is found that the balance point is at a length of 2 m when the cell is shunted by a 5 Omega resistance and is at a length of 3 m when the cell is shunted by a 10 Omega resistance, the internal resistance of the cell is then

In a potentiometer experiment the balancing with a cell is at length 240 cm. On shunting the cell with a resistance of 2Omega , the balancing length becomes 120 cm.The internal resistance of the cell is

RESONANCE ENGLISH-CURRENT ELECTRICITY-Exrcies-3(PART-2)
  1. A material B has twice the specific resistance of A. A circular wire m...

    Text Solution

    |

  2. The Kirchhoff’s first law (sum i=0) and second law (sumR= sum E) , ...

    Text Solution

    |

  3. The resistance of a wire is 5Omega at 50^@C at 6Omega at 100.

    Text Solution

    |

  4. Shown in the figure below is a meter-bridge set up with null deflectio...

    Text Solution

    |

  5. A 5V battery with internal resistance 2 Omega and a 2V battery with in...

    Text Solution

    |

  6. Two conductors have the same resistance at 0^(@)C but their temperatur...

    Text Solution

    |

  7. If a copper wire is stretched to make it 0.1% longer what is the perce...

    Text Solution

    |

  8. The current in the primary circuit of a potentiometer is 0.2 A. The sp...

    Text Solution

    |

  9. Two electric bulbs marked 25W - 220V and 100W - 220V are connected in ...

    Text Solution

    |

  10. The supply voltage to a room is 120 V. The resistance of the lead wire...

    Text Solution

    |

  11. Statement I: The higher the range, the greater the resistance of an am...

    Text Solution

    |

  12. In a large building, there are 15 bulbs of 40 W, 5 bulbs of 100 W, 5 f...

    Text Solution

    |

  13. When 5V potential difference is applied across a wire of length 0.1 m,...

    Text Solution

    |

  14. A galvanometer having a coil resistance of 100 Omega gives a full scal...

    Text Solution

    |

  15. In the following circuit the current in each resistance is

    Text Solution

    |

  16. Which of the following statement is false ?

    Text Solution

    |

  17. When a current of 5mA is passed through a galvanometer having a coil o...

    Text Solution

    |

  18. Two batteries with emf 12 V and 13 V are connected in parallel across ...

    Text Solution

    |

  19. In a potentiometer experiment it is found that no current passes throu...

    Text Solution

    |

  20. On interchanging the resistances, the balance point of a meter bridge ...

    Text Solution

    |