An alternating e.m.f. is given by $e = e_0 \sin \omega t$. In what time will the e.m.f. reach half its maximum value, if $e$ starts from zero? (Given: $\sin 30^{\circ} = 0.5$)

  • A
    $\frac{T}{4}$
  • B
    $\frac{T}{8}$
  • C
    $\frac{T}{12}$
  • D
    $\frac{T}{16}$

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