Home
Class 12
PHYSICS
A n-type silicon sample of width 4xx10^(...

A n-type silicon sample of width `4xx10^(-3)m`, thickness `25xx10^(-5)m` and length `6xx10^(-2)m` carries a current of 4.8 mA when the voltage is applied across the length of the sample. If the free electron density is `10^(22)m^(-3)`, then find how much time does it take for the electrons to travel the full length of the sample? Given that charge on an electron `e=1.6xx10^(-19)C`

A

0.02 s

B

0.01 s

C

0.04 s

D

0.06 s

Text Solution

Verified by Experts

The correct Answer is:
A
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE (LEVEL -II LECTURE SHEET (ADVANCED) (Matrix Matching Type Questions))|2 Videos

  • CURRENT ELECTRICITY

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE (LEVEL -II LECTURE SHEET (ADVANCED) (Integer Type Questions))|8 Videos

  • CURRENT ELECTRICITY

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE (LEVEL -I(MAIN) (Straight Objective Type Questions))|20 Videos

  • CURRENT ELECTRICITY

    AAKASH SERIES|Exercise PROBLEMS (LEVEL-II)|27 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    AAKASH SERIES|Exercise PRACTICE EXERCISEX|42 Videos

Similar Questions

Explore conceptually related problems

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 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 potential difference of 5V is applied across a conductor of length 10 cm. IF drift of electron is 2.5 xx 10^(-4) m//s , then electron mobility in SI unit is

The number of extra/short electrons in a conductor that has 14.4 xx 10^(-19) coulombs of positive charge is: (Charge on electron = 1.6 xx 10^(-19) coulombs)

A uniform copper wire of length 1m and cross section area 5 xx 10^(-7)m^(2) carries a current of 1A . Assuming that are 8 xx 10^(28) free electron per m^(3) in copper, how long will an electron take to drift from one end of the wire an electron the other. Charge on an electron = 1.6 xx 10^(-19)C

A current , 32 A, is made to pass through a conductor where the free electrons density is 4 xx 10^(28) m^(-3) and its area of cross section is 10^(-6) m^(2) . Find out the value of the drift velocity ( in mm // s ) of free electrons.

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

When 5 V potential difference is applied across a wire of length 0.1 m, the drift speed of electrons is 2.5 xx 10^(-4) ms ^(-1) . If the electron density in the wire is 8 xx 10^(28) m^(-3) , the resistivity of the material is close to :

A potential difference of 5 V is applied across a conductor of length 10 cm . If drift velcoity of electrons is 2.5 xx 10^(-4) m//s , then electron mobility will be

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)

Home
Profile