Home
Class 12
PHYSICS
A metallic resistor is connected across ...

A metallic resistor is connected across a battery. If the number of collisions of the free electrons with the lattice is some how decreased in the resistor (for example, by cooling it), the current will 

A

increase

B

decrease

C

remain constant

D

become zero

Text Solution

Verified by Experts

The correct Answer is:
A
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. The thermistors are usually made of

    Text Solution

    |

  2. For a chosen nonzero value of voltage, there can be more than one valu...

    Text Solution

    |

  3. A metallic resistor is connected across a battery. If the number of co...

    Text Solution

    |

  4. Choose the correct alternative

    Text Solution

    |

  5. Two wires of resistance R(1) and R(2) at 0^(@)C have temperature coeff...

    Text Solution

    |

  6. Arrange the following materials in the increasing order of their resis...

    Text Solution

    |

  7. Specific resistance of a wire depends upon

    Text Solution

    |

  8. Fuse wire is a wire of

    Text Solution

    |

  9. Which of following causes production of heat, when current is set up i...

    Text Solution

    |

  10. A constant voltage is applied between the two ends of a metallic wire....

    Text Solution

    |

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

    Text Solution

    |

  12. A resistor R(1) dissipates the power P when connected to a certain gen...

    Text Solution

    |

  13. Appliances based on heating effect of current work on

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  16. Choose the correct statement

    Text Solution

    |

  17. For a cell which charging in a circuit

    Text Solution

    |

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

    Text Solution

    |

  19. Internal resistance of a cell depends on

    Text Solution

    |

  20. When cells are arranged in series

    Text Solution

    |