Define mobility of electron.

The drift velocity of an electron for a unit electric field is referred to as the mobility of the electron. The mobility of an electron can be calculated by the formula:

μ = V_d/E

where, V_d refers to the drift velocity of an electron

E is the external electric field

The SI unit of electron mobility is m²s^-1V^-1

Related Questions

Give two examples of drift velocity.
What is the relation between drift velocity and electric field?
Explain the relation between current and drift velocity.
Define the drift velocity of electrons in a conductor?
Define 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.
It is known that the drift velocity of electrons is only a few mm/s for a current of a few amperes. How is it possible that a current is established almost instantaneously when a circuit is closed? For example, a bulb glows as soon as the connection is switched on. Explain.
Two conducting wires X and Y of the same diameter but different materials are joined in series across a battery. If the number density of electrons in X is twice that in Y, find the ratio of the drift velocity of electrons in the two wires.

Read More:

Drift Velocity – Important Topics
Electric Dipole	Relation between kva and kw	Current density formula
Meter bridge	Cells, emf, Internal Resistance	Power transformers
Electrical Formula	Power Of Alternating Current	Resistor Colour Codes
Types of Current	Resistivity Temperature Dependence	Voltage divider formula
Carbon Resistor	Cells in Series and in Parallel	Resistance Formula
Static Electricity	Difference between AC and DC	Derivation of Drift Velocity
Potentiometer	Difference between kva and kw	Internal resistance formula
Resistance	Relation between resistance and length	Permittivity And Permeability
EMF Formula	Difference between earth and neutral	Combination of Resistors
Resistivity formula	Difference between emf and voltage	Unit of Specific Resistance
Unit of Current	Relation between power and resistance	Uses of Resistor
Ampere	Difference between RTD and thermocouple	Types of Resistors
Current Electricity	Difference between air conditioning and refrigeration	Ohm’s Law and its Limitations
Voltage	Difference Between Primary Cell and Secondary Cell	Wheatstone Bridge
Conductivity	Differences Between Acceleration and Velocity	Electromotive Force

CBSE CLASS XII Related Questions

1.
Capacitors are manufactured with certain standard capacitances and working voltages. However, these standard values may not be the ones that are actually needed in a particular application. Two or more capacitors can be grouped in series or in parallel to achieve desired capacitance and voltage. When connected in series, the total capacitance decreases while the voltage rating increases, whereas in parallel connections, the total capacitance increases and maintains the same voltage rating. A capacitor stores energy in the electric field between its plates and stored energy is proportional to the square of the voltage and capacitance $U = \frac{1}{2}CV^2$, where symbols have their usual meanings.
Two capacitors, one of $3 \ \mu$F and the other of $6 \ \mu$F, are connected in series in the circuit as shown in the figure, for a long time. }

2.
Two air-filled capacitors of capacitances $C_1$ and $C_2$ are connected in parallel with a dc battery. After the capacitors are fully charged, a slab of dielectric constant K is inserted between the plates of each capacitor. How will the (i) charge on each capacitor and (ii) energy stored in the capacitor affected after the slab is introduced.

View Solution

3.
Read the following paragraph and answer the questions that follow.
In an experiment with convex lens of focal length f, the screen is fixed at a distance D from the object. A student slowly moves the lens away from the object towards the screen and finds that she is able to form sharp image of the object for two positions of the lens. The distance between these two positions of the lens is d.

4.
An electric field $\vec{E}$ is established across the ends of a cylindrical conductor of length L and area of cross-section A. Discuss how electrons attain an average velocity, independent of time. Hence, obtain a relation between current in the conductor and this ‘average velocity’ of electrons.

View Solution

5.
Write two advantages of reflecting telescope over refracting telescope.

View Solution

6.
Two metal spheres of radii $r_1$ and $r_2$ ($> r_1$) having charges $q_1$ and $q_2$ respectively kept in air, are brought in contact. Which of the following statements is not correct ?

The total charge of the two spheres is conserved.
Both spheres attain the same potential.
The final potential of the system equals $\frac{1}{4\pi\epsilon_0} \frac{(q_1 + q_2)}{(r_1 + r_2)}$
The final potential of the system equals $\frac{1}{4\pi\epsilon_0} \frac{(q_1 + q_2) (r_1 + r_2)}{r_1 r_2}$

View Solution

Define mobility of electron.

Related Questions

CBSE CLASS XII Related Questions

5.
Write two advantages of reflecting telescope over refracting telescope.

6.
Two metal spheres of radii $r_1$ and $r_2$ ($> r_1$) having charges $q_1$ and $q_2$ respectively kept in air, are brought in contact. Which of the following statements is not correct ?

Similar Physics Concepts

Comments

SUBSCRIBE TO OUR NEWS LETTER

Define mobility of electron.

Related Questions

CBSE CLASS XII Related Questions

5.Write two advantages of reflecting telescope over refracting telescope.

6.Two metal spheres of radii $r_1$ and $r_2$ ($> r_1$) having charges $q_1$ and $q_2$ respectively kept in air, are brought in contact. Which of the following statements is not correct ?

Similar Physics Concepts

Comments

SUBSCRIBE TO OUR NEWS LETTER

5.
Write two advantages of reflecting telescope over refracting telescope.

6.
Two metal spheres of radii $r_1$ and $r_2$ ($> r_1$) having charges $q_1$ and $q_2$ respectively kept in air, are brought in contact. Which of the following statements is not correct ?