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

Answer: Option 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?

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