Find vt for t 0in the circuit shown if the initial current
Find v(t) for t > 0in the circuit shown, if the initial current in the inductor is zero.
Solution
CONVERT THE TOTAL CIRCUIT IN TO S-DOMAIN
REACTANCE OF INDUCTOR =S*1=S
APPLY NODAL ANALYSIS
2=(V/5)+(V/28)+(V/S)
V[(1/5)+(1/28)+(1/S)]=2
V=[(2*5*28*S)/(33S+140)]
V=8.48*[S/(S+4.242)]
V=8.48*[1-1/(S+4.242)]
APPLY INVERSE LAPLACE TRANSFORM
V(t)=8.48*(u(t)-e^(-4.242t))
v(t)=8.48u(t)-8.48*e^(-4.242t)
