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JEE Main2003PhysicsMagnetic Effects of CurrentActual

A particle of mass M and charge Q moving with velocity v describe a circular path of radius R when subjected to a uniform transverse magnetic field of induction B . The work done by the field when the particle completes one full circle is

Options

  1. A( Mv ^2 R ) 2 R
  2. BZero
  3. CB Q 2 R
  4. DB Q v 2 R

Correct answer

B. Zero

Step-by-step solution

Force is ^ r to displacement the work done is zero

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