Home
Class 12
PHYSICS
A resistance R = 2Omega is connected to ...

A resistance `R = 2Omega` is connected to one of the gaps in a metre bridge, which uses a wire of length 1m. An unknown resistance X is connected in the other gap as shown in the figure. The balance point is noticed at 'l' from the positive end of the battery. On interchanging R and X, it is found that the balance point further shifts by 20 cm (away from end A). Neglecting the end correction, calculate the value of unknown resistance X used.

Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY - I AND II

    PATHFINDER|Exercise QUESTION BANK|244 Videos

Similar Questions

Explore conceptually related problems

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

Keeping a resistance of 2Omega in the left gap of a metre bridge , an unknown resistance is placed in the right gap and the null point is obtained at a distance of 40.0 cm . If no end error is present , what will be the value of the unknown resistance ?

In a meter bridge the balance point is found to the be at 40 cm from one end when the resistor at the end is 15Omega , Find the resistance at the other side .

If the resistance X and Y (XltY) be placed in the two gaps of a metre bridge , null point is obtained at a length of 20cm . Keeping Y unchanged if a resistance 4X is placed in place of X what will be the position of the null point ?

A resistance 1000 Omega is connected to a 100 V supply line. A voltmeter is connected across one end and the mid-point of the resistance and reads 40 V. Find the resistance of voltmeter.

PATHFINDER-CURRENT ELECTRICITY-QUESTION BANK
  1. The 'maximum' power rating of each resistor (2Omega) in the given circ...

    Text Solution

    |

  2. A set of n identical resistors, each of resistance R ohm when connecte...

    Text Solution

    |

  3. Two cells of e.m.f. E1 and E2 have internal resistance r1 and r2. Dedu...

    Text Solution

    |

  4. State kirchoff's rules for current distribution in an electrical netwo...

    Text Solution

    |

  5. A resistance R = 2Omega is connected to one of the gaps in a metre bri...

    Text Solution

    |

  6. The lengths and radii of there wires of same metal are in the rations ...

    Text Solution

    |

  7. State Kricholff's laws of an electrical network. Using Kirchoff's laws...

    Text Solution

    |

  8. Draw circuit diagram to compare emf of two primary cells. Derive the f...

    Text Solution

    |

  9. Which material is used for potentiometer wire and why?

    Text Solution

    |

  10. How can sensitivity of a potentiometer be increased?

    Text Solution

    |

  11. A and B are two points on a circular ring made of uniform wire of resi...

    Text Solution

    |

  12. A uniform wire of resistance R is shaped into a regular n sided polygo...

    Text Solution

    |

  13. A uniform wire of resistance R is shaped into a regular n sided polygo...

    Text Solution

    |

  14. Resistivity of the material of a conductor of uniform area of cross-se...

    Text Solution

    |

  15. Find the equivalent resistance of the network shown in the figure betw...

    Text Solution

    |

  16. An infinite ladder network of resistances is constituted with 1Omega a...

    Text Solution

    |

  17. An infinite ladder network of resistances is constituted with 1Omega a...

    Text Solution

    |

  18. An electric Kettle has two thermal coils. When a current is passed in ...

    Text Solution

    |

  19. If a copper wire is stretched to make it 00.1% longer, what is the per...

    Text Solution

    |

  20. A 24 v battery of internal resistance 4Omega is connected to a variabl...

    Text Solution

    |