Home
Class 12
PHYSICS
The electric power transferred by a cell...

The electric power transferred by a cell to an external resistance is maximum when the external resistance is equal to ...(r internal resistance)

A

`r//2`

B

`2r`

C

`r`

D

`r^(2)`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    AAKASH SERIES|Exercise EXERCISE - IB|44 Videos

  • CURRENT ELECTRICITY

    AAKASH SERIES|Exercise EXERCISE - II|84 Videos

  • CURRENT ELECTRICITY

    AAKASH SERIES|Exercise PROBLEMS|94 Videos

  • CURRENT ELECTRICITY

    AAKASH SERIES|Exercise PROBLEMS (LEVEL-II)|26 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    AAKASH SERIES|Exercise PRACTICE EXERCISEX|44 Videos
AAKASH SERIES-CURRENT ELECTRICITY-EXERCISE - IA
  1. A resistor R(1) dissipates the power P when connected to a certain gen...

    Text Solution

    |

  2. Appliances based on heating effect of current work on

    Text Solution

    |

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

    Text Solution

    |

  4. When electric bulbs of same power, but different marked voltage are co...

    Text Solution

    |

  5. Choose the correct statement

    Text Solution

    |

  6. For a cell which charging in a circuit

    Text Solution

    |

  7. The dimensional formula of the emf of a source of current are same as ...

    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. Back emf of a cell is due to

    Text Solution

    |

  13. When an electric cell drives current through load resistance, its Back...

    Text Solution

    |

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

    Text Solution

    |

  15. Two batteries of emfs epsilon(1) and epsilon(2) (epsilon(2) gt epsilon...

    Text Solution

    |

  16. A battery consists of a variable number n of identical cells having in...

    Text Solution

    |

  17. A cell of emf E has an internal resistance r & is connected to rheosta...

    Text Solution

    |

  18. n identical cells, each of emf epsilon and iternal resistance r, are j...

    Text Solution

    |

  19. n identical cells, cach of emf epsilon and internal resistance r, are ...

    Text Solution

    |

  20. A cell of emf E having an internal resistance r is connected to an ext...

    Text Solution

    |