Home
Class 12
PHYSICS
n identical calls, each of internal resi...

`n` identical calls, each of internal resistance `(r)` are first connected in parallel and then connected in series across a resistance (R). If the current through R is the same in both cases, then

A

`R=(r)/(2)`

B

`r=(R)/(2)`

C

`R=r`

D

`r=0`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    NARAYNA|Exercise Level 1 C.W|64 Videos
  • CURRENT ELECTRICITY

    NARAYNA|Exercise Level 1 H.W|63 Videos
  • CURRENT ELECTRICITY

    NARAYNA|Exercise Level 6|43 Videos
  • COMMUNICATION SYSTEM

    NARAYNA|Exercise Level-II(H.W)|25 Videos
  • DUAL NATURE OF RADIATION AND MATTER

    NARAYNA|Exercise ASSERTION AND REASON|15 Videos

Similar Questions

Explore conceptually related problems

N batteries each of emf E and internal resistance r are first connected in series and then in parallel to an external resistance R. if current through R is same in both cases then.

n identical cells each of e.m.f. E and internal resistance r are connected in series. An external resistance R is connected in series to this combination. The current through R is

Two identical cells each of emf epsilon , having negligible internal reistance r, are connercted in parallel with each other across an external resistance R. What is the current through this resistance.

Four cells, each of emf E and internal resistance r, are connected in series across an external resistance reverse. Then, the current in the external circuit is

n-identical cells each of emf E and internal resistance r are connected in series. Find the expression for current in the circuit given below

Two cells , each of emf E and internal resistance r , are connected in parallel across a resistor R . The power delivered to the resistor is maximum if R is equal to

Two batteries each of E and internal resistance r are connected turen by turn in series and in parallel, and areused to find current in an external resistance R . If the current in series is equal to that in parallel, the internal resistance of each battery is

NARAYNA-CURRENT ELECTRICITY-C.U.Q
  1. From the following the standard cell is

    Text Solution

    |

  2. A cell is to convert

    Text Solution

    |

  3. n identical calls, each of internal resistance (r) are first connected...

    Text Solution

    |

  4. The value of internal resistance of ideal cell is

    Text Solution

    |

  5. In a circuit two or more cells of the same emf are connected in parall...

    Text Solution

    |

  6. The resistance of an open circuit is

    Text Solution

    |

  7. According to Joule's law, if the potential difference across a conduct...

    Text Solution

    |

  8. Internal resistance of a cell depends on

    Text Solution

    |

  9. When cells are arranged in series

    Text Solution

    |

  10. To supply maximum current cells should be arrange in

    Text Solution

    |

  11. The terminal Pd of a cell is equal to its emf if

    Text Solution

    |

  12. The electric power transferred by a cell to an external resistance is ...

    Text Solution

    |

  13. Which depolarizers are used to neutralizes hydrogen layer in cells

    Text Solution

    |

  14. Assertion: Series combination of cells is used when their internal res...

    Text Solution

    |

  15. Assertion: To draw more current at low P.d, parallel connection of cel...

    Text Solution

    |

  16. Kirchoff's second law is based on the law of conservation of

    Text Solution

    |

  17. Kirchoff's second law is based on the law of conservation of

    Text Solution

    |

  18. Why is the meter bridge method considered unsuitable for the measureme...

    Text Solution

    |

  19. In a balanced wheatstone's network, the resistances in the arms Q and ...

    Text Solution

    |

  20. If in the experiment of Wheatstone's bridge, the positions of cells an...

    Text Solution

    |