Home
Class 12
PHYSICS
How many electrons per second pass throu...

How many electrons per second pass through a section of wire carrying a current of `0.7A`?

Text Solution

Verified by Experts

We known that `I = (q)/(t) = ("ne")/(t) , therefore, n = (it)/(e ) = (0.7xx1)/(1.6x10^(-19)`
So number of electrons in `n = 0.44xx10^(19)`
Promotional Banner

Topper's Solved these Questions

  • ELECTRIC CURRENT AND CIRCUIT

    CENGAGE PHYSICS|Exercise Exercise 5.2|50 Videos
  • ELECTRIC CURRENT AND CIRCUIT

    CENGAGE PHYSICS|Exercise Subjective|29 Videos
  • ELECTRIC CURRENT AND CIRCUIT

    CENGAGE PHYSICS|Exercise Solved Examples|12 Videos
  • ELECTRIC CURRENT & CIRCUITS

    CENGAGE PHYSICS|Exercise Kirchhoff s law and simple circuits|15 Videos
  • ELECTRIC FLUX AND GAUSS LAW

    CENGAGE PHYSICS|Exercise MCQ s|38 Videos

Similar Questions

Explore conceptually related problems

How many electrons per second pass through a cross-section of copper wire carrying 10^(-16) A current ?

How many electrons per sec pass through a cross-section of a copper wire carrying 10^(-15) ampere?

How many electrons per second pass through a section of resistance of 20Omega across which a potential difference of 64V is applied.

Knowledge Check

  • How many electrons per second pass through a cross-section od a copper wire carrying 10^(-5)A ? (charge of 1 electron is 1.0 xx 10^(-19) coulomb ).

    A
    `1.6 xx 10^(-36)`
    B
    `1 xx 10^(+14)`
    C
    6250
    D
    62500
  • The charge of an electron is 1.6 xx 10^(-19) coulomb. How many electrons per seconds pass through a cross section of a Cu wir carrying 10^(-6) amp ?

    A
    300
    B
    1800
    C
    1200
    D
    600
  • The number of electrons per second which pass through a cross section of a copper wire carrying 10^(-16) A is

    A
    `1.6xx10^(-3)` e/s
    B
    60 e/s
    C
    625 e/s
    D
    `16xx10^(-2)` e/s
  • CENGAGE PHYSICS-ELECTRIC CURRENT AND CIRCUIT-Exercise 5.1
    1. How many electrons per second pass through a section of wire carrying...

      Text Solution

      |

    2. A current of 7.5 A is maintained in wire of 45 s. In this time a. h...

      Text Solution

      |

    3. If 0.6 mol of electorns flows throutgh a wire in 45 min, what are (a) ...

      Text Solution

      |

    4. A typical copper wire might have 2xx10^(21) free electrons in 1 cm of ...

      Text Solution

      |

    5. A coil of wire has a resistance of 25.00Omega at 20^@ C and a resist...

      Text Solution

      |

    6. A metal wire of diameter 2mm and of length 300m has a resistance of 1....

      Text Solution

      |

    7. It is desired to make a 20Omega coil of wire, which has a zero thermal...

      Text Solution

      |

    8. A resistance thermometer measures temperature with the increase in res...

      Text Solution

      |

    9. Though the drift velocity of electorn responsible for current in a con...

      Text Solution

      |

    10. a. A steady current flows in a metallic conductor of non - uniform cro...

      Text Solution

      |

    11. A potential difference V is applied to copper wire fo diameter d and l...

      Text Solution

      |

    12. A wire has a resistance R. What will be its resistace if (a) it is d...

      Text Solution

      |

    13. The current in a wire varies with time according to the equation I = ...

      Text Solution

      |

    14. The following table gives the length of three copper rods, their diame...

      Text Solution

      |

    15. The current voltage graphs for a given metalic wire two different temp...

      Text Solution

      |

    16. The voltage-current variations of two metallic wire X and Y at constan...

      Text Solution

      |

    17. A beam contains 2.0xx10^8 doubly charged positive ions per cubic centi...

      Text Solution

      |

    18. The current density across a cylindrical conductor of radius R varies ...

      Text Solution

      |

    19. Shown a conductor of length l having a circular cross section. The rad...

      Text Solution

      |

    20. If a copper wire is stretched to make it 0.1% longer wha is the percen...

      Text Solution

      |