GATE Electronics and Communications (EC) 2014 Shift 2 Solved Paper

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Question : 42 of 65

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In the figure shown, the capacitor is initially uncharged. Which one of the following expressions describes the current I(t) (in mA) for 𝑡 > 0?

$I (t) = \;{5}/{3} (1−e^{−\;{t}/{τ\;}}) ,τ = \;{2}/{3}\:msec$
$I (t) = \;{5}/{2} (e^{−\;{t}/{τ\;}}) ,τ = \;{2}/{3}\:msec$
$I (t) = \;{5}/{3} (1−e^{−\;{t}/{τ\;}}) ,τ = 3\:msec$
$I (t) = \;{5}/{2} (1−e^{−\;{t}/{τ\;}}) ,\:τ = 3\:msec$

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