Home
Class 12
PHYSICS
Three identical cells of emf 4V each and...

Three identical cells of emf 4V each and unknown internal resistances are connected in parallel.The combination is connected to 10 ohm resistor. If terminal voltage across the cells is 2V, find internal resistance of each cell.

Promotional Banner

Topper's Solved these Questions

  • Electric Charges and Electrostatic Force

    PUNJAB BOARD PREVIOUS YEAR PAPERS|Exercise Exercise|39 Videos

  • Electric Field

    PUNJAB BOARD PREVIOUS YEAR PAPERS|Exercise Exercise|35 Videos

Similar Questions

Explore conceptually related problems

Three identical cells each of 2 V and unknow internal resistance are connected in parallel. This combination is connected to a 5 ohm resistor. IF the terminal voltage across the cell is 1.5 volt, what is the internal resistance of each cell?

n cells, each having emf. E and internal resistance r are connected in parallel. What is the net internal resistance of the combination?

The internal resistance of a cell of e.m.f. 2 V is 0.1 Omega . It is connected to a resistance of 3.9Omega . The voltage across the cell will be

The internal resistance of a cell of e.m.f. 2 V is 0.1 Omega . It is connected to a resistance of 3.9Omega . The voltage across the cell will be

Four identical cells of emf epsilon and internal resistance r are to be connected in series. Suppose, if one of the cell is connected wrongly, then the equivalent emf and effective internal resistance of the combination is

Ten identical cells each of e.m.f. E and internal resistance r are connected in series to form a closed circuit. An ideal voltmeter connected across three cells, will read

PUNJAB BOARD PREVIOUS YEAR PAPERS-Electric Current, Resistance and E.M.F. -Exercise
  1. A resistance of a tungsten filament at 150^@C is 133Omega.What will be...

    Text Solution

    |

  2. A silver wire has a resistance of 2.1Omega at 27.5^@C and a resistance...

    Text Solution

    |

  3. Three identical cells of emf 4V each and unknown internal resistances ...

    Text Solution

    |

  4. If maximum resistance from the combination of two resistances is 18 oh...

    Text Solution

    |

  5. A wire with an area of cross-section as 10 mm^2 has a resistance of 5O...

    Text Solution

    |

  6. A wire with an area of cross-section as 1 mm2 has a resistance of 10Q,...

    Text Solution

    |

  7. Given three resistors of resistances 1Q (Ohm), 2Q (Ohm) and 3Q (Ohm). ...

    Text Solution

    |

  8. How many electrons pass through alamp inone minute if current flowing ...

    Text Solution

    |

  9. How does the conductivity of metals varies with the rise in their temp...

    Text Solution

    |

  10. Why Eureka metal is used to make standard resistance coil?

    Text Solution

    |

  11. Why copper is used to make connecting wires ?

    Text Solution

    |

  12. How does the conductivity of semi-conductors varies with the rise in t...

    Text Solution

    |

  13. Why Manganin is used to make standard resistance coil ? How does the e...

    Text Solution

    |

  14. Define one Ampere of current.

    Text Solution

    |

  15. What is the resistance of an ideal voltmeter and an ammeter?

    Text Solution

    |

  16. The specific resistance of a conductor increases with Increase in temp...

    Text Solution

    |

  17. The specific resistance of a conductor increases with Increase in cros...

    Text Solution

    |

  18. The specific resistance of a conductor increases with Decrease in leng...

    Text Solution

    |

  19. The specific resistance of a conductor increases with Increase in cros...

    Text Solution

    |

  20. Why the fuse wire should have high resistance and low melting point?

    Text Solution

    |