Home
Class 12
PHYSICS
Tow cells with the same emf E and differ...

Tow cells with the same emf E and different internal resistances `r_(1)` and `r_(2)` are connected in series to an external resistances R . The value of R so that the potential difference across the first cell be zero is

A

`R=2(r_(1)+r_(2))`

B

`R=r_(2)-r_(1)`

C

`R=r_(1)-r_(2)`

D

`R=2(r_(1)-r_(2))`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    TARGET PUBLICATION|Exercise Evaluation Test|6 Videos

  • CURRENT ELECTRICITY

    TARGET PUBLICATION|Exercise Critical Thinking|24 Videos

  • CIRCULAR MOTION

    TARGET PUBLICATION|Exercise EVALUATION TEST|11 Videos

  • ELASTICITY

    TARGET PUBLICATION|Exercise Evaluation test|14 Videos

Similar Questions

Explore conceptually related problems

Two cell with the same e.m.f. E and difference internal resistance r_(1) and r_(2) are connected in series to an external resistance R a value of R be selected such that the potential difference as the flow cell E should be zero when

Two cells of the same e.mf. e but different internal resistances r_(1) and r_(2) are connected in series with an external resistance 'R'. The potential drop across the first cell is found to be zero. The external resistance Ris

Two cells of emf 2E and E with internal resistance r_(1) and r_(2) respectively are connected in series to an external resistor R (see figure). The value of R, at which the potential difference across the terminals of the first cell becomes zero is

[" 27.Two cells of same emf "E" but of different internal resistance "r_(1)&r_(2)" are connected "],[" in series with an external resistance "R" .The potential drop across the first cell is "],[" found to be zero.The external resistance "R" is "]

A circuit consists of two cells, each of e.m.f. E and internal resistances r_(1) and r_(2) are connected in series through an external resistance X. If the potential difference between the ends of the first cell is zero, the value of X in terms of r_(1) and r_(2) will be

Two cells each of emf E and internal resistacne r_(1)" and "r_(2) respectively are conneted in series with an external resistance R. The potential defference between the terminats of the first cell will be zero when R equal to

TARGET PUBLICATION-CURRENT ELECTRICITY -Competitive Thinking
  1. A wire of length 100 cm is connected to a cell of emf 2 V and negli...

    Text Solution

    |

  2. A potentiometer wire of length 1m and resistance 10 Omega is connected...

    Text Solution

    |

  3. Tow cells with the same emf E and different internal resistances r(1) ...

    Text Solution

    |

  4. A set of 'n' equal resistor, of value of 'R' each are connected in ser...

    Text Solution

    |

  5. A potentiometer circuit has been setup for finding. The internal resis...

    Text Solution

    |

  6. A Daniel cell is balanced on 125 cm length of a potentiometer wire. No...

    Text Solution

    |

  7. In a potentiometer experiment it is found that no current passes throu...

    Text Solution

    |

  8. In potentiometer experiment, a cell of emf 1.25 V gives balancing leng...

    Text Solution

    |

  9. In a potentiometer experiment two cells of e.m.f. E and E are used...

    Text Solution

    |

  10. A potentiometer has uniform potential gradient across it. Two cells c...

    Text Solution

    |

  11. A potentiometer wire is 100 cm long hand a constant potential differen...

    Text Solution

    |

  12. A potentiometer wire of Length L and a resistance r are connected in s...

    Text Solution

    |

  13. A conducting wire has length L(1) and diameter d(1). After stretching ...

    Text Solution

    |

  14. Which of the following statements is false ?

    Text Solution

    |

  15. You are given 10 resistors each of resistance 2Omega. First they are ...

    Text Solution

    |

  16. A filament bulb (500 W, 100 V) is to be used in a 230 V main supply. W...

    Text Solution

    |

  17. An electron in potentiometer experiences a force 2.4xx10^(-19)N. The l...

    Text Solution

    |

  18. Six wires each of resistance r form a tetrahedron. The equivalent resi...

    Text Solution

    |

  19. Two batteries with e.m.f 12 V and 13 V are connected in parallel acros...

    Text Solution

    |

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

    Text Solution

    |