In an $AC$ generator,induced emf $\varepsilon = 0$ at $t = 0$,then its value . . . . . .

  • A
    minimum at time $\frac{2\pi}{3\omega}$
  • B
    minimum at time $\frac{\pi}{2\omega}$
  • C
    maximum at time $\frac{2\pi}{\omega}$
  • D
    maximum at time $\frac{\pi}{2\omega}$

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