$A$ sinusoidal voltage produced by an $AC$ generator at any instant $t$ is given by the equation $V = 311 \sin(314t)$. The $rms$ value of voltage and frequency are respectively:
- A$200 \ V, 50 \ Hz$
- B$220 \ V, 100 \ Hz$
- C$220 \ V, 50 \ Hz$
- D$200 \ V, 100 \ Hz$
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