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Physics · JEE | Moving Charges and Magnetism

हिन्दी

The angular frequency \( \omega \) of a charged particle \( q \) of mass \( m \) moving in a uniform magnetic field \( B \) is:

  1. A
    \( \omega = \frac{m}{qB} \)
  2. B
    \( \omega = \frac{qB}{m} \)
  3. C
    \( \omega = \frac{q}{mB} \)
  4. D
    \( \omega = \frac{B}{qm} \)
View Answer & Solution

Correct answer · Option B

\( \omega = \frac{qB}{m} \)

Explanation

Equating magnetic force to centripetal force \( \frac{mv^2}{r} = qvB \) and substituting \( v = \omega r \) yields \( \omega = \frac{qB}{m} \).
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