Home
Class 12
PHYSICS
In a meter bridge experment, the value o...

In a meter bridge experment, the value of unknown resistance is `2Omega`. To get tehbalancing point at 40 cm distance form the same end, the resistance in the resistance box will be :

A

0.5 Omega

B

3Omega

C

20 Omega

D

80 Omega

Text Solution

Verified by Experts

The correct Answer is:
B
Apply condition for balance wheat stone bridge.
`P/Q=l/(100-l)=P/2=(100-40)/40`
`P=3Omega`.
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    RESONANCE|Exercise Solued miscellaneous Prolblems|8 Videos

  • CURRENT ELECTRICITY

    RESONANCE|Exercise Exercise-1 (Part-1)|46 Videos

  • COMMUNICATION SYSTEMS

    RESONANCE|Exercise Exercise 3|13 Videos

  • DAILY PRACTICE PROBLEM

    RESONANCE|Exercise DPP.No.71|1 Videos

Similar Questions

Explore conceptually related problems

An unknown resistance is connected in a left gap of a metre bridge . The balance point is obtained when a resistance of 10 Omega is taken out from the resistance box in the right gap. On increasing the resistance from the resistance box by 12.5 Omega the balance point shifts by 20 cm. find the unknown resistance.

In a meter bridge experiment the resistance of resistance box is 16 Omega which is inserted in right gap The null point is obtained at 36cm from the left end the least count of meter scale is lmm What is the value of unknown resistence ?( Error = L.C or L.C /2 )

The figure shows experimental set up of a meter bridge. When the two unknown resistances X and Y are inserted, the null point D is obtained 40 cm from the end A. When a resistance of 10 Omega is connected in series with X, the null point shifts by 10 cm. Find the position of the null point when the 10 Omega resistance is instead connected in series with resistance 'Y'. Determine the value of the resistance X and Y

Experiment set up of a meter bridge .When the two unknown resistance X and Y are intserted, the null point D is obtained 40 cm from the end A .When a resistance of 30 Omega is connected in series with X the mill point shift by 10 cm .Find the position of the point when the 30 Omega resistance is connected in series with X, the null point shifts by 10 cm. Find the position of the null point when the 30 Omega resistance is connected in series with resistance Y instead of X . Determine the values of resistances X and Y

In a meter bridge experiment, the null point is obtained at 20 cm from one end of the wire when resistance X is balanced against another resistance Y . If X lt Y , then where will be the new position of the null point from the same end, if one decides to balanced a resistance of 4X against Y ?

In a meter bridge when the resistance in the left gap is 4 Omega and an unknown resistance in the right gap the balance point is obtained at 40 cm from the zero end. On shunting the unknown resistance with 4 Omega , find the shift of the balance point on the bridge wire

In a metre bridge when the resistance in the left gap is 2Omega and an unknown resistance in the right gap, the balance point is obtained at 40 cm from the zero end. On shunting the unknown resistance with 2Omega find the shift of the balance point on the bridge wire.

RESONANCE-CURRENT ELECTRICITY-High Level Problems (HIP)
  1. In a meter bridge experment, the value of unknown resistance is 2Omega...

    Text Solution

    |

  2. A galvanometer having 30 divisions has a current sensitivity of 20muA/...

    Text Solution

    |

  3. A 150 V voltmeter has a resistance of 20,000Omega when connected in se...

    Text Solution

    |

  4. A perosn decides to use his bath tub water to generate electric power ...

    Text Solution

    |

  5. A cell of emf 3.4 V and internal resistance 3 Omega is connected to an...

    Text Solution

    |

  6. A battery is made by joining m rows of identical cells in parallel. Ea...

    Text Solution

    |

  7. In the circuit shown in figure, all wires have equal resistance r. Fin...

    Text Solution

    |

  8. A falvanometer having a coil resistance of 100 ohms gives a full scale...

    Text Solution

    |

  9. A 6 volt battery of negligible internal resistance is connected across...

    Text Solution

    |

  10. The emf E and the internal resistance r of the battery shown in figure...

    Text Solution

    |

  11. Consider an infinite ladder of network shown In fig 5.223. A voltage i...

    Text Solution

    |

  12. Determine the resistance R(AB) between points A abd B of the frame mad...

    Text Solution

    |

  13. A nichrome wire uniform cross-sectional area is bent to form a rectang...

    Text Solution

    |

  14. An electric heater has heating coils A and B , when coil A is switched...

    Text Solution

    |

  15. A thin uniform wire AB of length 1 m, an unknown resistance X and a re...

    Text Solution

    |

  16. In a potentiometer circuit, two wires of same matirial resistivity rho...

    Text Solution

    |

  17. A rod of length L and cross-section area A lies along the x-axis betwe...

    Text Solution

    |

  18. A galvanometer vaving 50 divisions provided with a variable shunt S is...

    Text Solution

    |

  19. Standard rating of each bulb is P, V. If total power consumption by co...

    Text Solution

    |

  20. In the circit shown the three ammeters (marked as 1, 2, 3) are indenti...

    Text Solution

    |

  21. Consider a potentiometer circuit, Primary cell is ideal. The length of...

    Text Solution

    |