Home
Class 11
PHYSICS
A cell develops the same power across tw...

A cell develops the same power across two resistances `R_(1)` and `R_(2)` separately. The internal resistance of the cell is

A

`R_(1)+R_(2)`

B

`(R_(1)+R_(2))/(2)`

C

`sqrt(R_(1)R_(2))`

D

`sqrt(R_(1)R_(2))/(2)`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • COMMUNICATION SYSTEM

    DC PANDEY|Exercise Only One Option is Correct|27 Videos

  • ELASTICITY

    DC PANDEY|Exercise Medical entrances s gallery|21 Videos

Similar Questions

Explore conceptually related problems

In the given circuit, an ideal voltmeter connected across the 10Omega resistance reads 2V. The internal resistance r, of each cell is:

N identical cells whether joined together in series or in parallel, give the same current, when connected to an external resistance of 'R'. The internal resistance of each cell is:-

A cell of constant emf first connected to a resistance R_(1) and then connected to resistance R_(2) . If power deliverd in both cases is same, then the internal resistance of the cell is

A cell of constant e.m.f. first connected to a resistance R_(1) and then connected to a resistance R_(2) . If power delivered in both cases is then the internal resistance o f the cell is

Two cells of emf 3V and 5V and internal resistance r_(1) and r_(2) respectively are in series with an external resistance R. if the p.d. across 1 st cell is zero, then R is

DC PANDEY-CURRENT ELECTRICITY-All Questions
  1. A conductor with rectangular cross section has dimensions (axx2axx4a) ...

    Text Solution

    |

  2. The length of a potentiometer wire is l. A cell of emf E is balanced a...

    Text Solution

    |

  3. A cell develops the same power across two resistances R(1) and R(2) se...

    Text Solution

    |

  4. Two wires of same dimension but resistivity p(1) and p(2) are connecte...

    Text Solution

    |

  5. Current passing through 3 Omega resistance is

    Text Solution

    |

  6. Current passing through 1 Omega resistance is zero. Then the emf E is

    Text Solution

    |

  7. As the switch S is closed in the circuit shown in figure, current pass...

    Text Solution

    |

  8. In the circuit shown in figure

    Text Solution

    |

  9. Find equivalent resistance between A and B

    Text Solution

    |

  10. Two identical batteries, each having emf of 1.8 V and of equal interna...

    Text Solution

    |

  11. In the two circuits shown in figure

    Text Solution

    |

  12. The net resistance between points P and Q in the circuit shown in figu...

    Text Solution

    |

  13. Current in 3 Omega resistance is

    Text Solution

    |

  14. A galvanometer of resistance R(G) is to be converted into an ammeter, ...

    Text Solution

    |

  15. The equivalent resistance between points A and B

    Text Solution

    |

  16. In the circuit shown in figure, each resistance is Net resistance betw...

    Text Solution

    |

  17. In the same figure, equivalent resistance between points A and D is

    Text Solution

    |

  18. Each resistance of the circuit shown in figure is r. The equivalent re...

    Text Solution

    |

  19. As shown, the circuit is made of 8 different resistance. It is found t...

    Text Solution

    |

  20. Resistance of each resistor is R. Then the equivalent resistance acros...

    Text Solution

    |