1.

    A conductor of cross-sectional area 1imes10−6m21 imes 10^{-6} m^2 carries a current of 4A. If the number density of free electrons is 1028m−310^{28} m^{-3}, and the charge on an electron is 1.6imes10−19C1.6 imes 10^{-19} C, what is the magnitude of the drift velocity of the electrons, assuming they all contribute to the current?

    A

    2.5 x 10^-3 m/s

    B

    2.5 x 10^-2 m/s

    C

    6.4 x 10^-1 m/s

    D

    6.4 x 10^-2 m/s

    Question Tags
    📚 Subject:Physics
    📑 Chapter:Current Electricity
    🎯Topic:Electric Current And Drift Velocity
    🎓 Ncert Level:Application
    🎯Difficulty :Hard
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :Electric Current, Drift Velocity, Current Density

    Related Questions

    1.

    What is the SI unit of drift velocity?

    A

    A/m2^2

    B

    C/s

    C

    m/s

    D

    m/s2^2

    Question Tags
    📚 Subject:Physics
    📑 Chapter:Current Electricity
    🎯Topic:Electric Current And Drift Velocity
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Drift Velocity, Units

    2.

    Ampere hour is the unit of

    A

    Quantity of charges

    B

    Potential

    C

    Energy

    D

    Current

    Question Tags
    📚 Subject:Physics
    📑 Chapter:Current Electricity
    🎯Topic:Electric Current And Drift Velocity
    🎓 Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Units of electrical quantities, Charge, Current

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