Homework Assignment #$4$

$14.$ For the DC circuit shown below, let $E=50V,R1=20,R2=5,R3=30,R4=30,L1=1H,$ and $L2=2H.$ Determine the source current, I at the conditions listed below:

$($a$).$ At the instant the switch is closed.

$($b$).$ At steady$-$state condition.

$15.$ For the DC RLC circuit shown below, all the V and I values have reached their final "steadystate" values. Find the currents $I_T,I_x,$ unknown resistor $Rx$ and power consumption $P_{Rx}($Watts$)$ across the Rx$.($Hint: You must simplify the circuit to steadv$-$state equivalent first!$)$

$=,I_x=,R_x=,P_{Rx}=$