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A proton and an electron both moving with the same velocity v enter into a region of magnetic field directed perpendicular to the velocity of the particles. They will now move in circular orbits such that

Correct answer: C. The time period for proton will be higher

  • A. Their time periods will be same
  • B. The time period for electron will be higher
  • C. The time period for proton will be higher
  • D. Their orbital radii will be same

Explanation

Option B is correct We know that period T= qB/2πm i.e., T∝m (Since q and B are same) ∵ Mass of proton > Mass of electron ∴ Time period of proton > Time period of electron.

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About Electromagnetism

Magnetic flux density and magnetic flux describe the strength of a magnetic field and the field passing through a surface. A charged particle moving through a magnetic field experiences a force perpendicular to its velocity and may follow circular or helical motion, depending on the angle between velocity and field.

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