Problem #2 = A de source of 120 V with negligible resistance is connected through a switch S to a lossless transmission line having Z 30 2 as shown in Fig. The line is terminated in a resistance of 90 2. If the switch closes at I = 0, plot VR versus time until t 5T, where T is the time for a voltage wave to travel the length of the line. = 120 V 2,-30 Q 90 Q Zeka V-120