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    2.

    Two copper wires of equal length but different cross-sectional areas carry the same current. Which of the following statements is true regarding the drift velocities of electrons in the two wires?

    A

    The drift velocity is the same in both wires.

    B

    The drift velocity is higher in the wire with the smaller cross-sectional area.

    C

    The drift velocity is higher in the wire with the larger cross-sectional area.

    D

    The drift velocity is zero in both wires since the wires are of the same material.

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    9.

    How does the relaxation time of electrons in a conductor affect drift velocity?

    A

    Drift velocity is inversely proportional to relaxation time.

    B

    Drift velocity is directly proportional to relaxation time.

    C

    Relaxation time has no effect on drift velocity.

    D

    Drift velocity is proportional to the square of the relaxation time.

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