Home
Class 12
PHYSICS
A current of 10 A is maintained in a con...

A current of 10 A is maintained in a conductor of cross-section `1 cm^(2) ` . If the free electron density in the conductor is `9 xx 10^(28) m^(-3) ` , then drift velocity of free electrons is

A

`4 xx 10^(-7) ms^(-1)`

B

`4 xx 10^6 ms^(-1)`

C

`2 xx 10^(-7) ms^(-1)`

D

`2 xx 10^6 ms^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • APPENDICES ( REVISION EXERCISE )

    AAKASH SERIES|Exercise REVISION EXERCISE (MAGNETISM AND MATTER )|52 Videos

  • APPENDICES ( REVISION EXERCISE )

    AAKASH SERIES|Exercise REVISION EXERCISE (CUTTENT ELECTRICITY )|108 Videos

  • ALTERNATING CURRENT

    AAKASH SERIES|Exercise EXERCISE - III|24 Videos

  • APPENDICES (REVISION EXERCISE)

    AAKASH SERIES|Exercise LAW OF MOTION|128 Videos

Similar Questions

Explore conceptually related problems

A current of 10 A is mainatained in a conductor of cross - section 1 cm^(2) . If the free electron density in the conductor is 9 xx 10^(28) m^(-3) , then drift velocity of free electrons is .

A current 0.5 amperes flows in a conductor of cross-sectional area of 10^(-2) m^2 . If the electron density is 0.3 * 10^(28) m^(-3) , then the drift velocity of free electrons is

Mobility of free electrons in a conductor is

Drift speed of electrons, when 1.5 A of current flows in a copper wire of cross setion 5 mm^(2) , is v. If the electron density in copper is 9xx10^(28)//m^(3) the value of v in mm//s close to (Take charge of electron to be =1.6xx10^(-19)C)

Find the velocity of charge leading to 1A current which flows in a copper conductor of cross section 1cm^2 and length 10 km . Free electron density of copper is 8.5 X 10^28//m^3 . How long will it take the electric charge to travel from one end of the conductor to the other?

A current 4.0 A exist in a wire of cross-sectional area 2.0 mm^(2) . If each cubic metre of the wire contains 12.0xx10^(28) free electrons, then the drift spped is

A copper wire has a square cross-section, 2.0 mm on a side. It carries a current of 8 A and the density of free electrons is 8 xx 10^(28)m^(-3) . The drift speed of electrons is equal to

A current of 1.0 A exists in a copper wore of cross-section 1.0mm^(2) . Assuming one free electron per atom calculate the drift speed of the free electrons in the wire. The density of copper is 9000kg m^(-3) .

What are the possible paths of free electrons inside the conductor ?

A conducting wire of cross-sectional area 1 cm^(2) has 3 xx 10^(23) charge carriers per m3. If wire carries a current of 24 mA , then drift velocity of carriers is

AAKASH SERIES-APPENDICES ( REVISION EXERCISE )-REVISION EXERCISE (MOVING CHANGES & MEGNETISM)
  1. A charged particle of charge 4 mC enters a uniform magnetic field of i...

    Text Solution

    |

  2. An electron in the beam of a TV picture tube is accelerated by a poten...

    Text Solution

    |

  3. A current of 10 A is maintained in a conductor of cross-section 1 cm^(...

    Text Solution

    |

  4. A charged particle is accelerated thrught a potential difference of 12...

    Text Solution

    |

  5. A particle of mass m and charge q is projected into a region having a ...

    Text Solution

    |

  6. A charge partilce with velocity V=xhati+yhatj moves in a magnetic fiel...

    Text Solution

    |

  7. A cyclotron's oscillator frequency is 10MHz. What should be the operat...

    Text Solution

    |

  8. A semi circular current loop is placed in an uniform magnetic field of...

    Text Solution

    |

  9. A straight wire of length 30 cm and mass 60 mg lies in a direction 30^...

    Text Solution

    |

  10. A horizontal rod of mass 10 g and length 10 cm is placed on a smooth p...

    Text Solution

    |

  11. A straight horizontal wire of mass 10mg and length 1.0 cm carries a cu...

    Text Solution

    |

  12. A conductor of length 20cm and mass 18 mg lies in a direction of 60^@ ...

    Text Solution

    |

  13. A parabolic section of wire, as shown in figure is located in the X-Y ...

    Text Solution

    |

  14. A thin flexible wire of length L is connected to two adjacent fixed po...

    Text Solution

    |

  15. A current I flows in an infinitely long wire with cross section in the...

    Text Solution

    |

  16. A current of 2A flows in a network containing two equilateral triangle...

    Text Solution

    |

  17. A particle of charge -16xx10^(-18) coulomb moving with velocity 10 ms^...

    Text Solution

    |

  18. A wire carrying current I is tied between points P and Q and is in the...

    Text Solution

    |

  19. A proton (mass m) accelerated by a potential difference V flies throug...

    Text Solution

    |

  20. A positive charge 'q' of mass 'm' is moving along the +x axis. We wish...

    Text Solution

    |