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A particle of mass $m$ and carrying charge $-q_1$ is moving around a charge $+q_2$ along a circular path of radius r. Find period of revolution of the charge $-q_1$
  • A$\sqrt{\frac{16 \pi^3 \varepsilon_0 m r^3}{q_1 q_2}}$
  • B$\sqrt{\frac{8 \pi^3 \varepsilon_0 m r^3}{q_1 q_2}}$
  • C$\sqrt{\frac{q_1 q_2}{16 \pi^3 \varepsilon_0 m r^3}}$
  • D$0$
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