The peak value of an alternating current is $5 \ A$ and its frequency is $60 \ Hz$. Find its $rms$ value and the time taken to reach the peak value of current starting from zero.
- A$3.536 \ A, 4.167 \ ms$
- B$3.536 \ A, 15 \ ms$
- C$6.07 \ A, 10 \ ms$
- D$2.536 \ A, 4.167 \ ms$
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