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Find the velocity of charge leading to 1...

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 `8.5x10^28//m^3`. How long will it take the electric charge to travel from one end of the conductor to the other?

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Calculate the drift speed of the electrons when 1A of current exists in a copper wire of cross section 2mm^2 The number of free electrons in 1cm^3 of copper is 8.5xx10^22

Calculate the drift speed of the electrons when 1A of current exists in a copper wire of cross section 2 mm^(2) .The number of free electrons in 1cm^(3) of copper is 8.5xx10^(22) .

Knowledge Check

  • 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
    ` 6.94 xx 10^(-6) m//s`
    B
    `5.94 xx 10 ^(-2) m//s`
    C
    `1.94 xx 10^(-3) m//s`
    D
    `2.94 xx 10^(-4) m//s`

  • 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
    `6.94 xx 10^(-6) m //s `
    B
    ` 5.94 xx 10^(-2) m //s `
    C
    ` 1.94 xx 10^(-3) m//s `
    D
    ` 2.94 xx 10^(-4) m//s `

  • 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

    A
    `2.1 * 10^(-5) ms^(-1)`
    B
    `2.5 * 10^(-3) ms^(-1)`
    C
    `1.5 * 10^(-6) ms^(-1)`
    D
    `1.04 * 10^(-7) ms^(-1)`

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    Drift speed of electrons, when 1.5 A of current flows in a copper wire of cross setion 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)

    Drift speed of electrons, when 1.5 A of current flows in a copper wire of cross setion 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)

    A current of 4.8 A is flowing in a copper wire of cross-sectional area 3xx10^(-4) m^(2) . Find the current density in the wire.

    Find the average drift speed of free electrons in a copper wire of area of cross-section 10^(-7) m^(2) carrying current of 1.5 A and having free electron density 8.5 xx 10^(28) m^(-3)

    Find the average drift speed of free electrons in a copper wire of area of cross - section 10^(-7) m^(2) carrying current of 1.5 A and having free electron density 8.5 xx 10^(28) m^(-3) .

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