Home
Class 12
PHYSICS
AB is a potentiometer wire of length 100...


AB is a potentiometer wire of length 100 cm. when a cell `epsi_(2)` is connected across AC, where AC=75cm, no current flows from `epsi_(2)`. Find (i) the potential gradient along AB and (ii) emf of the cell `epsi_(2)`. the internal resistance of the cell `epsi_(1)` is negligible.

Text Solution

Verified by Experts

The correct Answer is:
(i). 0.02 volt/cm, (ii). 1.5 V
Promotional Banner

Topper's Solved these Questions

  • ELECTRICAL INSTRUMENTS

    SL ARORA|Exercise Problem From competitive examinations|11 Videos

  • ELECTRIC POTENTIAL AND ELECTRIC FLUX

    SL ARORA|Exercise Problems for self practive|61 Videos

  • ELECTROMAGNETIC INDUCTION

    SL ARORA|Exercise All Questions|108 Videos

Similar Questions

Explore conceptually related problems

AB is a potentiometer wire of length 100 cm . When a cell E_(2) is connected across AC , where AC = 75 cm , no current flows from E_(2) . The internal resistance of the cell E_(1) is negligible. Find emf of the cell E_(2) .

AB is a potentiometer wire of length 100 cm . When a cell E_(2) is connected across AC , where AC = 75 cm , no current flows from E_(2) . The internal resistance of the cell E_(1) is negligible. Find the potential gradient along AB .

A battery epsilon_(1) of 4 V and a variable resistance Rh are connected in series with the wire AB of the potentiometer. The length of the wire of the potentiometer of 1 meter. When a cell epsilon_(2) of emf 1.5 V is connected between points A and C, no currents flows through epsilon_(2) Length AC=60 cm. (i) Find the potetial difference between the ends A and B of the potentiometer. (ii) Would the method work, if the battery epsilon_(1) is replaced by a cell of emf of 1 V ?

In a potentiometer experiment, the galvanometer shows no deflection when a cell is connected across 60 cm of the potentiometer wire. If the cell is shunted by a resistance of 6 Omega , the balance is obtained across 50 cm of the wire. The internal resistance of the cell is

When a resistor of 5 Omega is connected across a cell, its terminal potential differnce is balanced by 140 cm of potentiometer wire and when a resistance of 8 Omega is connected across the cell, the terminal potential difference is balanced by 160 cm of the potentiometer wire. Find the internal resistance of the cell.

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 of of 40 cm of the potentiometer wire. What is the value of R ?

In a ptentiometer experiment it is found that no current passes through the galvanometer when the terminals of a cell are connected across 509 cm of the potentiometer wire. When the cell is cnnected across 490 cm of the wire Find the internal resistance of the cell.

SL ARORA-ELECTRICAL INSTRUMENTS-Problem for self practice
  1. A 10 metre long potentiometer wire carries a steady current. A 1.018 v...

    Text Solution

    |

  2. A potentiometer wire has a potential gradient of 0.0025 volt/cm along ...

    Text Solution

    |

  3. AB is a potentiometer wire of length 100 cm. when a cell epsi(2) is co...

    Text Solution

    |

  4. A potentiometer is being used to determine the internal resistance of ...

    Text Solution

    |

  5. A cell can be balanced against 110 cm and 100 cm of potentiometer wire...

    Text Solution

    |

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

    Text Solution

    |

  7. The resistance of a potentiometer wire is 18Omega. A high resistance b...

    Text Solution

    |

  8. A standard cell of emf 1.08 V is balanced by the potential difference ...

    Text Solution

    |

  9. In an experiment with a potentiometer to measure the internal resistan...

    Text Solution

    |

  10. Four resistances of 15Omega,12Omega,4Omega and 10Omega respectively ar...

    Text Solution

    |

  11. Four coils resistances 3,6,9 and 30Omega respectively are arranged to ...

    Text Solution

    |

  12. The wheatstone's bridge of figure. Is showing no deflection in the gal...

    Text Solution

    |

  13. Five resistances are connected as shown in figure. What is the effecti...

    Text Solution

    |

  14. Calculate the equivalent resistance between points A and B of the netw...

    Text Solution

    |

  15. Calculate the equivalent resistance between the points A and B of the ...

    Text Solution

    |

  16. Calculate the resistance between the points A and B of the network sho...

    Text Solution

    |

  17. for the network shown in figure, determine the value of R and the curr...

    Text Solution

    |

  18. The potentiometer wire AB shown in figure. Is 40 cm long. Where should...

    Text Solution

    |

  19. The potentiometer wire AB shown in figure. Is 50 cm long. When AD=30cm...

    Text Solution

    |

  20. In an experiment with post office box, the ratio arms are 1000:10. If ...

    Text Solution

    |