An alternating e.m.f. is given by $e = e_0 \sin \omega t$. In how much time will the e.m.f. have half its maximum value,if $e$ starts from zero? $(T = \text{time period}, \sin 30^{\circ} = 1/2)$

  • A
    $T/8$
  • B
    $T/4$
  • C
    $T/12$
  • D
    $T/16$

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