If an electron and a proton are projected with the same velocity normal to a magnetic field, which one will suffer greater deflection?
Correct answer: B. electron
- A. proton
- B. electron
- C. both will suffer greater defection
- D. None of these
Explanation
The deflection is inversely proportional to mass, so for an electron and a proton moving with the same velocity, an electron with lighter mass will deflect more, while a proton with heavier mass will deflect less.
This question appeared on the ETEA MDCAT 2011 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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