Question

A particle of mass ‘m’ and carrying a charge ‘q’ enters with a velocity ‘v’ perpendicular to a uniform magnetic field. The time period of rotation of the particle

• A. Decreases with increase of velocity v
• B. Increases with increase of radius of the orbit
• C. Depends only on magnetic field
• D. Depends on magnetic field and (q/m) of the particle

Answer 1

Answer: (D)

$\left(T=\frac{2\pi m}{qB}\right)$