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

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 ?

A

1.2 m

B

0.5m

C

2.2m

D

0.2

Text Solution

Verified by Experts

The correct Answer is:
A

`(E_(2))/(E_(1))=(l_(2))/(l_(1)) " " :.l_(2)=(1xx1.8)/(1.5)=1.2m`
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    NIKITA PUBLICATION|Exercise Multiple Choice Questions|314 Videos
  • COMMUNICATION SYSTEMS

    NIKITA PUBLICATION|Exercise Multiple Choice Questions (Examples for Practice)|8 Videos
  • ELASTICITY

    NIKITA PUBLICATION|Exercise MCQ|314 Videos

Similar Questions

Explore conceptually related problems

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.

In a potentiometer experiment, the null point is obtained at 140 cm for a cell of e.m.f. 1.2 V. With another cell of unknown e.m.f., the null point is obtained at 210 cm. The unknown e.m.f. is

In potentiometer experiment, if l_(1) is the balancing length for e.m.f. of the cell of internal resistance r and l_(2) is the balancing length for its terminal potential difference when shunted with resistance R then :

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 .

In a potentiometer experiment two cells of e.m.f. E and E are used in series and in conjunction and the balancing length is found to be 58 cm of the wire. If the olarity of E is reversed, then the balancing length becomes 29 cm . The ratio (E_(1))/(E_(2)) of the e.m.f. of the two cells is

In a potentiometer experiment the balancing length is 8 m, when the two cells E_(1) and E_(2) are joined in series. When the two cells are connected in opposition the balancing length is 4m. The ratio of the e.m.f. of two cells (E_(1)//C_(2)) is

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 ?

NIKITA PUBLICATION-CURRENT ELECTRICITY-Multiple Choice Questions
  1. The emf of cell is balanced by balancing length 450 cm . When the res...

    Text Solution

    |

  2. A resistance of potentiometer wire is 1Omega//m. A Daniel cell of e.m....

    Text Solution

    |

  3. In a potentiometer experiment, the balancing length is found to be 1.8...

    Text Solution

    |

  4. A potentiometer wire of length 4 cm has a some resistance. The resist...

    Text Solution

    |

  5. The resistance of a potentiometer wire is 10 Omega and its length i...

    Text Solution

    |

  6. Electromotive force is the force, which is able to maintain a constant

    Text Solution

    |

  7. A series combination of two resistors 1 Omega each is connected to a 1...

    Text Solution

    |

  8. Figure6.52 shows a balanced wheatstone network. Now, it is disturbed b...

    Text Solution

    |

  9. The alloys constantan and manganin are used to make standard resistanc...

    Text Solution

    |

  10. A battery of e mf 10 V and internal resistance 3Omega is connected to ...

    Text Solution

    |

  11. When a wire is stretched and its radius becomes r//2 then its resistan...

    Text Solution

    |

  12. In the circuit shown in the figure, the current drawn from the battery...

    Text Solution

    |

  13. A cell of e.m.f. 2V and internal resistance 0.5Omega is connected acro...

    Text Solution

    |

  14. The terminal potential difference for a cell is 8.5 V when current is ...

    Text Solution

    |

  15. A potentiometer wire has a length 10m and a resistance 20Omega. Its te...

    Text Solution

    |

  16. If length of a conductor is doubled by keeping volume constant, then w...

    Text Solution

    |

  17. Two resistances are joined in parallel whose equivolent resistance is ...

    Text Solution

    |

  18. In a metrebridge, copper strips are used to

    Text Solution

    |

  19. Current supplied by the cell in the adjoining figure is

    Text Solution

    |

  20. A wire of resistance 4 Omega is stretched to four times of its origina...

    Text Solution

    |