Q131 / 200 · NEET 2007 · Physics

Under the influence of a uniform magnetic field a charged particle is moving in a circle of radius $R$ with constant speed $v$. The time period of the motion:

  • A
    depends on both $R$ and $v$
  • Correct answer
    B
    is independent of both $R$ and $v$
  • C
    depends on $R$ and not on $v$
  • D
    depends on $v$ and not on $R$.

Solution

$T=\frac{2 \pi m}{q B}$ which is independent of both $R$ and $V$.

Hence, the correct answer is option: 'B'.

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