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NEET2016PhysicsMagnetic Effects of CurrentActual

An electron is moving in a circular path under the influence of a transverse magnetic field of 3.57 × 10 - 2   T . If, the value of e m is 1 .76 × 10 11   C   kg - 1 , the frequency of revolution of the electron is

Options

  1. A1     GHz
  2. B100     MHz
  3. C62.8     MHz
  4. D6.28     MHz

Correct answer

A. 1     GHz

Step-by-step solution

f = q B 2 π m = 1.76 × 10 11 × 3.57 × 10 - 2 2 × 3.14 = 10 9   Hz = 1   GHz .

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