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MHT CET202014 Oct 2020Morning ShiftPhysicsMagnetic Effects of CurrentActual

An electron revolving in circular orbit of radius 'r' with velocity 'V' and frequency 'v' has orbital magnetic moment 'M'. If the frequency of revolution is doubled then the new magnetic moment will be

Options

  1. AM 4
  2. B2 ~N
  3. CM
  4. DM 2

Correct answer

B. 2 ~N

Step-by-step solution

M=i A= e t r²= e V 2 r r²= e V r 2 = e r² 2 M if is doubled, M will be doubled.

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