Electric forces change the magnitude and direction of velocity while magnetic forces change _ of velocity.
Correct answer: B. Only direction
- A. Only Magnitude
- B. Only direction
- C. Magnitude and direction
- D. Neither magnitude nor direction
Explanation
Electric forces change the magnitude and direction of velocity, as they exert a force on charged particles based on the electric field, while magnetic forces can change only direction of velocity.
This question appeared on the UHS MDCAT 2022 paper, which you can sit online with every answer explained.
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About Charged Particle in a Magnetic Field
A charged particle moving through a magnetic field experiences the Lorentz force, which is perpendicular to both its velocity and the field. The motion may be circular or helical, with questions involving radius, angular frequency, time period, and work done. A stationary charge feels no magnetic force.
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