The peak value of an alternating emf $e$ given by $e = e_0 \cos \omega t$ is $10 \ V$ and its frequency is $50 \ Hz$. At time $t = \frac{1}{600} \ s$,the instantaneous e.m.f is:

  • A
    $10 \ V$
  • B
    $\frac{10}{\sqrt{3}} \ V$
  • C
    $5 \ V$
  • D
    $5 \sqrt{3} \ V$

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