In an $AC$ generator, induced emf $\varepsilon = 0$ at $t = 0$, then its value . . . . . .
- Aminimum at time $\frac{2\pi}{3\omega}$
- Bminimum at time $\frac{\pi}{2\omega}$
- Cmaximum at time $\frac{2\pi}{\omega}$
- Dmaximum at time $\frac{\pi}{2\omega}$
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