The $r.m.s.$ value of an ac of $50\,Hz$ is $10\,amp$ . The time taken by the alternating current in reaching from zero to maximum value and the peak value of current will be

  • A

    $2 \times 10^{-2}\,sec$ and $14.14\,amp$

  • B

    $1 \times 10^{-2}\,sec$ and $7.07\,amp$

  • C

    $5 \times 10^{-3}\,sec$ and $7.07\,amp$

  • D

    $5 \times 10^{-3}\,sec$ and $14.14\,amp$

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