Lorentz Force -Multiple Choice Questions Quiz

Interactive MCQs on “Lorentz Force”:

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 Lorentz Force?

(a) The force exerted by gravity on a charged particle
(b) The force experienced by a moving charge in a magnetic field
(c) The force experienced by a charged particle due to an electric field
(d) The force that keeps atoms together in a molecule

Question 2: What is the mathematical expression for the Lorentz Force on a charged particle?

(a) F = qE
(b) F = qvB
(c) F = ma
(d) F = mg

Question 3: In which direction does the Lorentz Force act on a positively charged particle moving in a magnetic field?

(a) In the direction of the magnetic field
(b) In the opposite direction of the magnetic field
(c) Perpendicular to both the velocity and the magnetic field
(d) Parallel to the velocity of the particle

Question 4: What is the SI unit of the magnetic field (B) in the Lorentz Force equation?

(a) Coulomb (C)
(b) Tesla (T)
(c) Newton (N)
(d) Joule (J)

Question 5: If a charged particle moves parallel to the magnetic field, what is the magnitude of the Lorentz Force on the particle?

(a) Zero
(b) Maximum
(c) Equal to the electric field
(d) Proportional to the charge of the particle

Question 6: What happens to the Lorentz Force on a charged particle if its speed (velocity) doubles while moving in a magnetic field?

(a) The force remains the same
(b) The force quadruples
(c) The force becomes half
(d) The force doubles

Question 7: When does a charged particle experience maximum Lorentz Force while moving in a magnetic field?

(a) When the particle moves perpendicular to the magnetic field
(b) When the particle moves parallel to the magnetic field
(c) When the particle moves at an angle of 45 degrees to the magnetic field
(d) When the particle comes to rest in the magnetic field

Question 8: What is the direction of the Lorentz Force experienced by a negatively charged particle moving in a magnetic field?

(a) In the direction of the magnetic field
(b) In the opposite direction of the magnetic field
(c) Perpendicular to both the velocity and the magnetic field
(d) Parallel to the velocity of the particle

Question 9: Which of the following factors does NOT affect the magnitude of the Lorentz Force on a charged particle in a magnetic field?

(a) Charge of the particle (q)
(b) Velocity of the particle (v)
(c) Strength of the electric field (E)
(d) Strength of the magnetic field (B)

Question 10: What kind of path does a charged particle follow in a uniform magnetic field if its initial velocity is perpendicular to the magnetic field lines?

(a) Straight line
(b) Circle
(c) Parabola
(d) Hyperbola