Home
Class 12
PHYSICS
During an experiment with a metre bridge...

During an experiment with a metre bridge, the galvanometer shows a null point when the jockey is pressed at `40.0 cm` using a standard resistance of `90 Omega`, as shown in the figure. The least count of the scale used in the metre bridge is 1mm. The unknown resistance is

A

`60+-0.15Omega`

B

`136=5+-0.56Omega`

C

`60=5+-0.25Omega`

D

`135=5+-0.23Omega`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    RESONANCE|Exercise Exrcies-3(PART-2)|23 Videos

  • CURRENT ELECTRICITY

    RESONANCE|Exercise High Level Problems (HIP)|21 Videos

  • CURRENT ELECTRICITY

    RESONANCE|Exercise Exercise-2 (Part-4)|12 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

In a metre bridge experiment, the balancing length from the left end is found to be 20 cm. If a standard resistance of 20 ohm is kept in the right gap, then the value of the unknown resistance in the left gap is

In the circuit of meter bridge shown in the figure.If null deflection is obtained at 40cm length of the wire as shown,the value of unknown resistance is

In a balanced metre bridge, the segment of wire opposite to a resistance of 70Omega is 70 cm. The unknown resistance is

In a metre bridge , the balancing length from the left end is found to be 40cm, when a known resistance of 3Omega is placed in the right gap, then the value of unknown resistance is

An unknown resistance 'X' is placed in the left gap and and a known resistance of 60Omega is plaecd in the right gap of metre bridge. The null point is obtained at 40 cm from the left end fo the bridge. Fid the unknown resistance.

In a metre bridge, the gaps are closed by two resistance P and Q and the balance point is obtained at 40 cm . When Q is shunted by a resistance of 10 Omega , the balance point shifts to 50 cm . The values of P and Q are. .

An unknown resistance is placed in the left gap and resistance of 50 ohm is placed in the right gap of a meter bridge . The null point is obtained at 40 cm from the left end. Determine the unknown resistance.

In meter bridge , the balancing length from left is found to be 20 cm when standard connected of 1 Omega is in right gap . The value of unknown resistance is

RESONANCE-CURRENT ELECTRICITY-Exrcies-3(PART-1)
  1. Figure shows three resistor configurations R1,R2 and R3 connected to 3...

    Text Solution

    |

  2. Statement-1 : In a Meter Bridge experiment, null point for an unknown ...

    Text Solution

    |

  3. For the circuit shown in the figure

    Text Solution

    |

  4. Consider a thin square sheet of side L and thickness t, made of a mate...

    Text Solution

    |

  5. Incandescent bulbs are designed by keeping in mind that the resistance...

    Text Solution

    |

  6. To verify Ohm's law, a student is provided with a test resistor R(T), ...

    Text Solution

    |

  7. When two identical batteries of internal resistance 1Omega each are co...

    Text Solution

    |

  8. Two batteries of different emfs and different internal resistances are...

    Text Solution

    |

  9. For the resistance network shown in the figure, choose the correct opt...

    Text Solution

    |

  10. Heater of an electric kettle is made of a wire of length L and diamete...

    Text Solution

    |

  11. Two ideal batteries of emf V(1) and V(2) and three resistance R(1)R(2)...

    Text Solution

    |

  12. A galvanometer gives full scale deflection with 0.006 A current. By co...

    Text Solution

    |

  13. During an experiment with a metre bridge, the galvanometer shows a nul...

    Text Solution

    |

  14. In an aluminium (Al) bar of square cross section, a square hole is dri...

    Text Solution

    |

  15. In the following circuit, the current through the resistor R (=2Omega)...

    Text Solution

    |

  16. An infinite line charge of uniform electric charge density lambda lies...

    Text Solution

    |

  17. Consider two identical galvanometers and two identical resistors with ...

    Text Solution

    |

  18. Consider an evacuated cylindrical chamber of hight h rigid conducting ...

    Text Solution

    |

  19. Consider an evacuated cylindrical chamber of hight h rigid conducting ...

    Text Solution

    |

  20. A moving coil galvanometer has 50 turns and each turn has an area 210 ...

    Text Solution

    |