Home
Class 12
PHYSICS
When an unknown resistance and a resista...

When an unknown resistance and a resistance `6Omega` are connected in the left and right gaps of a meter bridge the balance point is obtained at 50 cm. if `3Omega` resistance is connected in parallel to resistance in right gap, the balance point is

A

decreases by 25 cm

B

increases by 25 cm

C

decreases by 16.7 cm

D

increases by 16.7 cm

Text Solution

Verified by Experts

The correct Answer is:
B
`(X)/(R)=(l)/(100-l)`
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    NARAYNA|Exercise Level 2 C.W|59 Videos

  • CURRENT ELECTRICITY

    NARAYNA|Exercise Level 2 H.W|45 Videos

  • CURRENT ELECTRICITY

    NARAYNA|Exercise Level 1 C.W|64 Videos

  • COMMUNICATION SYSTEM

    NARAYNA|Exercise Level-II(H.W)|25 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    NARAYNA|Exercise ASSERTION AND REASON|15 Videos

Similar Questions

Explore conceptually related problems

When an unknown resistance and a resistance of 4Omega are connected in the left and right gaps of a meterbridge, the balance point is obtained at 50 cm. the shift in the balance point if a 4Omega resistance is now connected in parallel to the resistance in the right gap is

When an unknown resistance and a resistance of 4 ohm are connected in the left and right gaps of Meterbridge, the balance point is obtained at 50 cm. The shift in the balance point if 4 ohm resistance is connectedin parallel in the right gap is

When unknown resistance and a resistance of 5 Omega are used in left and rigt gaps of meter bridge the balance point is 50 cm. The balancing point of 5Omega resistance is now connected in seriece to the resistor in right gap

Two unknown resistance X and Y are connected to left and right gaps of a meter bridge and the balancing point is obtained at 80 cm from left. When a 10Omega resisance is connected in parallel to x , balance point is 50 cm from left. The values of X and Y respectively are

When two known resistance R and S are connected in the left and right gaps of a meter bridge, the balance point is found at a distance l_(1) from the zero end of the meter bridge wire. An unknown resistance X is now connected in parallel to the resistance S and the balance point is found at a distance l_(2) from the zero end of the meter bridge wire, Obtain a formula for X in terms of l_(1), l_(2) and S.

In a metre bridge experiment, unknown resistance X and known resistance of 60Omega is connected in left and right gap of a metre bridge respectively. If the null point is obtained at 40 cm from the left end then the unknown resistance is

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.

Two unknown resistances are connected in two gaps of a meter-bridge. The null point is obtained at 40 cm from left end. A 30Omega resistance is connected in series with the smaller of the two resistances, the null point shifts by 20 cm to the right end. The value of smaller resistance in Omega is

In a meter bridge experiment two unknown resistance X and y are connected to left and right gaps of a meter bridge and the balancing point is obtained at 20 cm from right (XgtY) the new position of the null point from left if one decides balance a resistance of 4 X against Y.

NARAYNA-CURRENT ELECTRICITY-Level 1 H.W
  1. The emf of a cell is 2 V. When the terminals of the cell is connected ...

    Text Solution

    |

  2. If the external resistance is equal to internal resistance of a cell o...

    Text Solution

    |

  3. Two cells each of emf 10 V and each 1Omega internal resistance are use...

    Text Solution

    |

  4. The figure below shows current in a part of electric circuit. The curr...

    Text Solution

    |

  5. Current in the ain circuit shows is

    Text Solution

    |

  6. Find i for the given loop.

    Text Solution

    |

  7. The potential difference between points A nd B is

    Text Solution

    |

  8. In wheat stone bridge P and Q are approximately equal. When Ris 500Ome...

    Text Solution

    |

  9. To balance the bridge in the circuit in the circuit the values of R is

    Text Solution

    |

  10. The points in a metre bridge is at 35.6 cm. if the resistances in the ...

    Text Solution

    |

  11. In a metre bridge expt, when the resistances in the gaps are interchan...

    Text Solution

    |

  12. When an unknown resistance and a resistance 6Omega are connected in th...

    Text Solution

    |

  13. When unknown resistance and a resistance of 5 Omega are used in left a...

    Text Solution

    |

  14. In a meter bridge experiment, null point is obtained at 20 cm from one...

    Text Solution

    |

  15. In a potentiometer the balance length with standard cadmium cell is 50...

    Text Solution

    |

  16. Two cells of emf's E(1) and E(2) when placed in series produce null de...

    Text Solution

    |

  17. Then 6 identical calls of no internal resistance are connected in seri...

    Text Solution

    |

  18. In an experiment to determine the internal resistance of a cell with p...

    Text Solution

    |

  19. The resistivity of a potentiometer wire is 40xx10^(-8)Omega-m and its ...

    Text Solution

    |

  20. The emf of a cell is Ev, and its its internal resistance is 1Omega. A ...

    Text Solution

    |