1.

The current equation for the given circuit is?(a) i=10e^(-0.01)t A(b) i=10e^(0.01)t A(c) i=10e^(-0.001)t A(d) i=100e^(-0.01)t AThis question was posed to me in an interview.This intriguing question comes from Transients in CR Networks in chapter Capacitance and Capacitors of Basic Electrical Engineering

Answer»

The correct answer is (a) i=10e^(-0.01)t A

Explanation: The KVL equation is:

100+10i(0)+1/10*integral(i(0)dt)=0

On APPLYING LAPLACE TRANSFORM to this equation, we get:

100/s=I(s)/10s+10I(s)

Solving the equation, we get:

i=10e^(-0.01)t A.



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