Question:medium
A charged particle moves in a magnetic field with velocity $ v $ perpendicular to the field $ B $. The radius of the circular path is $ r $. Which of the following expressions gives the charge $ q $ of the particle?
A charged particle moves in a magnetic field with velocity $ v $ perpendicular to the field $ B $. The radius of the circular path is $ r $. Which of the following expressions gives the charge $ q $ of the particle?
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Use the relationship between the Lorentz force and centripetal force to derive the charge of the particle.
Updated On: Nov 26, 2025
- $ q = \frac{mv}{Br} $
- $ q = \frac{mvB}{r} $
- $ q = \frac{mB}{vr} $
- $ q = \frac{Bvr}{m} $
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