Home
Class 12
PHYSICS
A potentiometer wire of length 1.0 m has...

A potentiometer wire of length 1.0 m has a resistance of `15Omega`. It is connected to a 5V battery in series with a resistance of `5Omega`. Determine the emf of the primary cell which gives a balance point at 60cm.

A

thermo emf is balanced

B

thermo emf is not balanced

C

data is insufficient

D

balancing is independent of temperature

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • APPENDICES ( REVISION EXERCISE )

    AAKASH SERIES|Exercise REVISION EXERCISE (MOVING CHANGES & MEGNETISM)|95 Videos

  • APPENDICES ( REVISION EXERCISE )

    AAKASH SERIES|Exercise REVISION EXERCISE (MAGNETISM AND MATTER )|52 Videos

  • APPENDICES ( REVISION EXERCISE )

    AAKASH SERIES|Exercise REVISION EXERCISE (ELECTRIC POTENTIAL & CAPACITANCE )|143 Videos

  • ALTERNATING CURRENT

    AAKASH SERIES|Exercise EXERCISE - III|24 Videos

  • APPENDICES (REVISION EXERCISE)

    AAKASH SERIES|Exercise LAW OF MOTION|128 Videos

Similar Questions

Explore conceptually related problems

A potentiometer wire of length 1 m has a resistance of 10Omega . It is connected to a 6V battery in series with a resistance of 5Omega . Determine the emf of the primary cell which gives a balance point at 40cm.

A potentiometer wire of length 1.0 m has a resistance of 15 ohm. It is connected to a 5 V source in series with a resistance of 5 Omega . Determine the emf of the primary cell which has a balance point at 60 cm.

The potentiometer wire of length 100cm has a resistance of 10Omega . It is connected in series with a resistance of 5Omega and an accumulaot or emf 3V having negligible resistance. A source 1.2V is balanced against a length 'L' of the potentionmeter wire. find the value of L.

A potentiometer wire of length 100 cm has a resistance of 10 Omega . It is connected in series with a resistance R and cell of emf 2 V and negligible resistance. A source of emf 10 mV is balanced against a length of 40 cm of the potentiometer wire. What is the value of R ?

A potentiometer wire of length 100 cm has a resistance of 100Omega it is connected in series with a resistance and a battery of emf 2 V and of negligible internal resistance. A source of emf 10 mV is balanced against a length of 40 cm of the potentiometer wire. what is the value of the external resistance?

A potentiometer wire of length 100 cm having a resistance of 10 Omega is connected in series with a resistance R and a cell of emf 2V of negligible internal resistance. A source of emf of 10 mV is balanced against a length of 40 cm of the potentiometer wire. What is the value of resistance R ?

A potentiometer wire of length 100 cm having a resistance of 10 Omega is connected in series with a resistance R and a cell of emf 2V of negligible internal resistance. A source of emf of 10 mV is balanced against a length of 40 cm of the potentiometer wire. What is the value of resistance R ?

A potentiometer wire of length 100 cm having a resistance of 10 Omega is connected in series with a resistance R and a cell of emf 2V of negligible internal resistance. A source of emf of 10 mV is balanced against a length of 40 cm of the potentiometer wire. What is the value of resistance R ?

A potentiometer wire is 10 m long and has a resistance of 18Omega . It is connected to a battery of emf 5 V and internal resistance 2Omega . Calculate the potential gradient along the wire.

A potentiometer wire of length 1m and resistance 20 Omega is connected in series with a 15V battery and an external resistance 40 Omega . A secondary cell of emf E in the secondary circuit is balanced by 24 cm long potentiometer wire. The emf E of the cell is ,

AAKASH SERIES-APPENDICES ( REVISION EXERCISE )-REVISION EXERCISE (CUTTENT ELECTRICITY )
  1. In a meter bridge 30 Omega resistance is connected in the left gap an...

    Text Solution

    |

  2. In a meter bridge, the left and right gaps are closed by resistances 2...

    Text Solution

    |

  3. A battery of internal resistance 4 Omega is connected to he network of...

    Text Solution

    |

  4. A resistance of 2Omega is connected across one gap of a meter bridge (...

    Text Solution

    |

  5. A student finds the balancing length to be 'l' with a cell of constant...

    Text Solution

    |

  6. In an experiment with potentiometer to measure the internal resistance...

    Text Solution

    |

  7. A potentiometer wire of length 100cm has a resistance of 10Omega. It i...

    Text Solution

    |

  8. A 1Ω resistance in series with an ammeter is balanced by 75 cm of pot...

    Text Solution

    |

  9. A potentiometer wire of length 200cm has a resistance of 20Omega It is...

    Text Solution

    |

  10. In an experiment for calibration of voltmeter, a standard cell of emf ...

    Text Solution

    |

  11. A potentiometer wire of length 10m and resistance 30 ohm is connected ...

    Text Solution

    |

  12. A potentiometer wire of 5m length and having 20Omega resistance is con...

    Text Solution

    |

  13. In the primary circuit of a potentiometer, a cell of E.M.F 1 V and a r...

    Text Solution

    |

  14. A potentiometer wire of length 1.0 m has a resistance of 15Omega. It i...

    Text Solution

    |

  15. A potentiometer wire of 5m length and having 20Omega resistance is con...

    Text Solution

    |

  16. A thermocouple has its junctions at 0^@ C and 100^@ C. It produces 0.0...

    Text Solution

    |

  17. A cell of emf 1.6 V is connected across a potentiometer wire of length...

    Text Solution

    |

  18. In the circuit shown in fig., the potential difference between the poi...

    Text Solution

    |

  19. The length of potentiometer wire is 1m and its resistance is 4Omega. A...

    Text Solution

    |

  20. In the arrangement shows in fig. , when the switch S2 is open, the gal...

    Text Solution

    |