Maximum kinetic energy of the positive ion in the cyclotron is

  • A

    $\frac{{{q^2}B{r_0}}}{{2m}}$

  • B

    $\frac{{q{B^2}{r_o}}}{{2m}}$

  • C

    $\frac{{{q^2}{B^2}r_0^2}}{{2m}}$

  • D

    $\frac{{qB{r_0}}}{{2{m^2}}}$

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