Drift Velocity -Multiple Choice Questions Quiz

Interactive MCQs on “Drift Velocity”:

Solve the following 10 questions. Only one option is correct. Click on the “Submit” button when done. Click on the “embed” button to use this quiz on your website. Click on “WhatsApp” to share this quiz.

Question 1: What is the drift velocity?

(a) The speed at which a charged particle moves randomly in a material
(b) The average velocity of a charged particle due to an applied electric field
(c) The velocity at which a charged particle moves due to gravity
(d) The velocity at which a charged particle moves in a vacuum

Question 2: Which of the following factors does not affect the drift velocity of charged particles in a material?

(a) The strength of the applied electric field
(b) The temperature of the material
(c) The mass of the charged particles
(d) The size of the charged particles

Question 3: Which of the following materials would have the highest drift velocity for electrons?

(a) Copper
(b) Glass
(c) Rubber
(d) Air

Question 4: What happens to the drift velocity of charged particles in a material as the temperature increases?

(a) The drift velocity increases
(b) The drift velocity decreases
(c) The drift velocity remains constant
(d) The drift velocity becomes zero

Question 5: Which of the following statements about drift velocity is true?

(a) The drift velocity of charged particles is proportional to the strength of the electric field
(b) The drift velocity of charged particles is inversely proportional to the temperature of the material
(c) The drift velocity of charged particles is unaffected by the number of free charge carriers in the material
(d) The drift velocity of charged particles is always higher than the speed of light

Question 6: A copper wire with a cross-sectional area of 1 mm² carries a current of 1 A. If the density of free electrons in copper is 8.5 x 10²⁸ m⁻³ and the average time between collisions is 2 x 10⁻¹⁴ s, what is the drift velocity of the free electrons in the wire?

(a) 1.06 x 10⁷ m/s
(b) 3.4 x 10⁻⁹ m/s
(c) 2.13 x 10⁵ m/s
(d) 8.5 x 10²⁸ m/s

Question 7: A wire of length 1 m and cross-sectional area 1 mm² carries a current of 1 A. If the drift velocity of electrons in the wire is 10⁻⁴ m/s, how long does it take for an electron to move from one end of the wire to the other?

(a) 10 s
(b) 10⁵ s
(c) 10⁷ s
(d) 10⁹ s

Question 8: A copper wire with a length of 10 m and a diameter of 2 mm carries a current of 2 A. What is the resistivity of copper if the potential difference across the wire is 1 V?

(a) 1.72 x 10⁻⁸ Ωm
(b) 2.85 x 10⁻⁸ Ωm
(c) 3.44 x 10⁻⁸ Ωm
(d) 4.17 x 10⁻⁸ Ωm

Question 9: What is the drift velocity of electrons in a vacuum?

(a) 0 m/s
(b) Infinite m/s
(c) 10⁻¹⁹ m/s
(d) 10⁸ m/s

Question 10: Which of the following factors affect the drift velocity of electrons in a conductor?

(a) Length of the conductor
(b) Cross-sectional area of the conductor
(c) Electric field applied to the conductor
(d) All of the above