Home
Class 12
PHYSICS
Write the expression for the drift veloc...

Write the expression for the drift velocity of charge carriers in a conductor of length 'l' across which a potential difference 'V' is applied.

Text Solution

Verified by Experts

Drift velocity `v_d = (eV)/(ml) tau`
Here `tau` is the relaxation period, e the charge and m the mass of charge carriers.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    U-LIKE SERIES|Exercise SHORT ANSWER QUESTIONS|42 Videos

  • CURRENT ELECTRICITY

    U-LIKE SERIES|Exercise LONG ANSWER QUESTIONS - I|47 Videos

  • CURRENT ELECTRICITY

    U-LIKE SERIES|Exercise ASSERTION-REASON TYPE QUESTIONS|5 Videos

  • CBSE SAMPLE QUESTION PAPER 2019-20 (SOLVED)

    U-LIKE SERIES|Exercise SECTION D|6 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    U-LIKE SERIES|Exercise SELF ASSESSMENT TEST SECTION-C (VERY SHORT ANSWER QUESTIONS)|3 Videos

Similar Questions

Explore conceptually related problems

Derive an expression for drift velocity of electrons in a conductor. Hence deduce Ohms law.

Derive an expression for drift velocity of electrons in a conductor. Hence deduce ohm's law.

Knowledge Check

  • The drift velocity of free electrons in a conductor of length 6 m is 0.25 ms^(-1) under the application of potential difference of 100 V. The mobility of free electrons is

    A
    `2 * 10^(-3) m^2 V^(-1) s^(-1)`
    B
    `2.5 * 10^(-2) m^2 V^(-1) s^(-1)`
    C
    `1.5 * 10^(-2) m^2 V^(-1) s^(-1)`
    D
    `1.5 * 10^(-3) m^2 V^(-1) s^(-1)`

    • Similar Questions

    Explore conceptually related problems

    Derive an expression for drift velocity of free electrons in a conductor in terms of relaxation time.

    How does the random motion of free electrons in a conductor get affected when a potential difference is applied across its ends?

    Define the term 'drift velocity' of charge carriers in a conductor and wire its relationship with the current flowing through it.

    Define the term 'drift velocity' of charge carriers in a conductor and write its relationship with the current flowing through it.

    Define the term ‘drift velocity’ of charge carriers in a conductor and write its relationship with the current flowing through it.

    Derive the expression for drift velocity of free electron in terms of relaxation time and electric field applied across a conductor.

    Using the concept of drift velocity of charge carriers in a conductor, deduce the relationship between current density and resistivity of the conductor.

    Home
    Profile