# Electronics and Communication Engineering - Exam Questions Papers - Discussion

6.

In the circuit shown, in switch S is open for a long time and is closed at t = 0. The current i(t) for t ≥ 0+ is

 [A]. i(t) = 0.5 - 0.125e-1000t A [B]. i(t) = 1.5 - 0.125e-1000t A [C]. i(t) = 0.5 - 0.5e-1000t A [D]. i(t) = 0.375e-1000t A

Explanation:

i(f) = 0.5, i(i) = 0.75

i(t) = Vr + (ii - ij)e-1/p = 0.5 - 0.125e-1000t .

 Bharath said: (Apr 17, 2015) Can you explain it clearly?

 Indu said: (May 6, 2015) Can someone explain it please.

 Karthick said: (Sep 14, 2015) Can't understood this problem.

 Anupama said: (Dec 28, 2015) Sir please give a detailed description.

 Monika said: (Jun 27, 2016) Need explanation to understand the solution.

 Govind said: (Feb 13, 2017) Guys, I guess question is incomplete. Value of one resistor is not given.

 Karin said: (Mar 8, 2017) Can anyone explain it clearly?

 Chotu said: (Nov 13, 2019) Can you explain in detail.

 Al Amin said: (Jan 2, 2021) Can anyone explain in detail?