Drift Velocity
Trending Questions
Define the term ‘mobility’ of charge carriers. Write its S.I. unit
The mobility of charge carriers increases with
Increase in the average collision time
Increase in the electric field
Increase in the mass of the charge carriers
Decrease in the charge of the mobile carriers
Define the relaxation time of the free electrons drifting in a conductor. How is it related to the drift velocity of free electrons? Use this relation to deduce the expression for the electrical resistivity of the material.
Define mobility of a charge carrier. What is its relation with relaxation time?
[1 Mark]
- Vd∝E
- Vd = Constant
- Vd∝√E
- Vd∝E2
√KQqmd
2√KQqmd
√KQq2md
- 12√KQqmd
Uniform electric field of 10NC-1 exist in the vertically downward direction find the increase is electric potential as one goes up through a height of 50 cm
The distance traveled (in metres) by a particle in seconds is given by . The speed of the particle after will be
None of these
What does Lambda mean in electric field?
A steady current flows in a metallic conductor of non-uniform cross-section. The quantity/quantities constant along the length of the conductor is/are
Current only.
Current, electric field and drift velocity
Current and drift speed
Speed only
What is the difference between gauss theorem and gauss law ?
- v
- None of these
- v4
- v2
- 4vd
- vd2
- 2vd
- vd4
The positive mutual potential energy of a system containing two charges corresponds to
A current of is flowing through a conductor. The number of electrons flowing per second is
- 0.77×10−5m/s
- 1.77×10−5m/s
- 2.08×10−5m/s
- 0.57×10−5m/s
![](https://search-static.byjusweb.com/question-images/byjus/infinitestudent-images/ckeditor_assets/pictures/15904/content_6.jpg)
- None of these
- 1 : 2 : 8
- 1 : 2 : 4
- 1 : 1 : 2
- Newton’s second law is not valid inside a conductor
- Some mysterious force pulls the electrons in the other direction
- The electrons keep hitting the fixed positive ions and lose their momentum
- Electrical force can never accelerate a charge
A copper wire of mass carries a current of . What fraction of the total number of free electrons present in the copper wire flows through the cross-section of the copper wire in ? (gram atomic weight of copper is ).
What is electrical discharge and what is electrical breakdown
- 2
- 0.2
- 0.02
- 3
![](https://search-static.byjusweb.com/question-images/byjus/ckeditor_assets/pictures/864193/original_original_1.png)
- v2<v1<v3
- v1<v2<v3
- v1=v3<v2
- v1>v2=v3
Can I have cbse board preparation notes of chapter ""electric potential and capacitance"" of physics... Please give me detailed notes....