In an $ac$ circuit $I = 100\, sin \,200$ $\pi t.$ The time required for the current to achieve its peak value will be
In an $ac$ circuit $I = 100\, sin \,200$ $\pi t.$ The time required for the current to achieve its peak value will be
- A
$\frac{1}{{100}}sec$
- B
$\frac{1}{{200}}sec$
- C
$\frac{1}{{300}}sec$
- D
$\frac{1}{{400}}sec$
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