\textbf{159-} An alternating current whose peak value is $2\,\text{A}$ and its period is $0.025\,\text{s}$, passes through a $5\,\Omega$ resistor. What is the equation of the alternating current in SI?
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(1) $I = 2\sin 400\pi t$ \hspace{0.5cm} (2) $I = 2\sin 100\pi t$ \hspace{0.5cm} (3) $I = 10\sin 400\pi t$ \hspace{0.5cm} (4) $I = 10\sin 100\pi t$
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