Home
Class 12
PHYSICS
In a potentiometer experiment , the ba...

In a potentiometer experiment , the balancing length for a cell was found to the 1.20 M . Now , a resistance of `10 Omega` is connected across the terminals of this cell and the balancing length becomes 80 cm . The internal resistance of this cell is .

A

`2Omega `

B

` 5 Omega `

C

` 1.5 Omega `

D

` 15 Omega `

Text Solution

Verified by Experts

The correct Answer is:
2
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    AAKASH INSTITUTE|Exercise ASSIGNMENT SECTION-C(OBJECTIVE TYPE QUESTION ))|3 Videos

  • CURRENT ELECTRICITY

    AAKASH INSTITUTE|Exercise ASSIGNMENT SECTION-E (ASSERTION-REASON TYPE QUESTION)|13 Videos

  • CURRENT ELECTRICITY

    AAKASH INSTITUTE|Exercise ASSIGNMENT(SECTION-A(OBJECTIVE TYPE QUESTIONS))|59 Videos

  • COMMUNICATION SYSTEMS

    AAKASH INSTITUTE|Exercise ASSIGNMENT SECTION D (Assertion-Reason)|10 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    AAKASH INSTITUTE|Exercise ASSIGNMENT (SECTION-D)|10 Videos

Similar Questions

Explore conceptually related problems

In a potentiometer experiment the balancing length with a cell is 560 cm. When an external resistance of 10Omega is connected in parallel to the cell, the balancing length changes by 60 cm. Find the internal resistance of the cell.

The emf of cell is balanced by balancing length 450 cm . When the resistance of 10 Omega is connected across the cell, balancing length changes by 100 cm. The internal resistance of a cell is

In a potentiometer experiment, the balancing length with a cell is 560cm. When an external resistance of 10ohms is connected in parallel to the cell the balancing length changs by 60cm. The internal resistance of the cell in ohm is

Null point in the galvanometer is obtained when a cell of emf E and internal resisance r is connncted across the length of 22 cm wire of the potentiometer . Now a resistane of 10Omega is connected across the terminals of the cell (by closing the key K) and null point is obtained against the length of cm. The internal resistance r of the cell is -

A 2.0 V potentiometer is used to determine the internal resistance of 1.5 V cell. The balance point of the cell in the circuit is 75 cm . When a resistor of 10Omega is connected across cel, the balance point sifts to 60 cm . The internal resistance of the cell is

In a potentiometer experiment, the balancing length is found to be 1.8 m for a cell of e.m.f. 1.5 V. What is the balancing length for a cell of e.m.f. 1 V ?

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

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

AAKASH INSTITUTE-CURRENT ELECTRICITY-ASSIGNMENT SECTION-B(OBJECTIVE TYPE QUESTION ))
  1. An ameter and a milliammeter are converted from identical galvanometer...

    Text Solution

    |

  2. A voltmeter has resistance 2000 Omega and range 0.5 V. For increasing ...

    Text Solution

    |

  3. In a potentiometer experiment , the balancing length for a cell w...

    Text Solution

    |

  4. The drift velocity of free electron in a metal wire of a given potenti...

    Text Solution

    |

  5. The equivalent resistance between A and B in the following figure is ...

    Text Solution

    |

  6. Two electric bulbs A and B rated 200V - 100W and 200 V - 60 W are conn...

    Text Solution

    |

  7. A current i passes through a wire of length l , radius of cross-sectio...

    Text Solution

    |

  8. The power consumption by the circuit shown in figure at steady state i...

    Text Solution

    |

  9. The current I through a conductor varies with time t as shown in figur...

    Text Solution

    |

  10. The current drawn by the battery in the situation shown in figure is

    Text Solution

    |

  11. In the situation shown, the current in arm PQ will be

    Text Solution

    |

  12. Seven identical cells each of e.m.f. E and internal resistance r are c...

    Text Solution

    |

  13. In the situation shown, resistance R(1),R(2) and R(3) are in the ratio...

    Text Solution

    |

  14. In the situation shown in figure , an ideal ammeter is connected acros...

    Text Solution

    |

  15. Two cells when connected in series are balanced on 6 m on a potentiome...

    Text Solution

    |

  16. The resistance between the terminal point P and Q of the given infini...

    Text Solution

    |

  17. Half part of a wire of resistance R is stretched to make it 1% longer ...

    Text Solution

    |

  18. The effective resistance between A and B in the network shown is

    Text Solution

    |

  19. In the circuit shown, the potential differences, V(1) ( between A and ...

    Text Solution

    |

  20. A wire of length l and area A is connected to an ideal battery . The d...

    Text Solution

    |