Lorentz Force MCQs

Practice Lorentz Force MCQs with four options, answers and explanations for focused Electronics & Telecommunication Engineering revision.

Question 1

Electromagnetic TheoryLorentz Force

A charged particle moving exactly parallel to a uniform magnetic field experiences magnetic force of magnitude?

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Correct Answer: A. Zero

Explanation: F=qvB sinθ; for parallel motion θ=0, so the magnetic force is zero.

Reference: Standard electromagnetic theory: lorentz force

Question 2

Electromagnetic TheoryLorentz Force

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Correct Answer: D. 24 N

Explanation: F=qvB sin90°=2×3×4=24 N.

Reference: Standard electromagnetic theory: lorentz force

Question 3

Electromagnetic TheoryLorentz Force

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Correct Answer: A. q(v × B)

Explanation: The magnetic part of Lorentz force is F=q(v×B).

Reference: Standard electromagnetic theory: lorentz force