b) Figure 4 shows a transmission line circuit using a 100 m long, low-loss 50 line of phase velocity 2.03 × 108 m/s, with a shunt 1000 load located 40 m from its source end (the far end of the 500 line, to the right, is not shown). + 1 kV 50Ω Zo=5002 Zo=5002 1000 40 m Figure 4 (i) Calculate the line's inductance and capacitance per unit length, and transit time t for one signal pass between the source and the 1000 shunt load. (ii) If the switch is closed at time t = 0, sketch four, fully-labelled graphs of the voltage and current waveforms at the source end of the line and across the 100 shunt load, all plotted over the same time interval from = 0 to 3.