So I am currently working on some homework and cam across this problem. The circuit is attached. The problem asks us to determine the load voltage Vl for RL equal to: i. Open Circuit ii. 10kOhm iii. 1KOhm iv. 100Ohm I'm stuck because I don't know how to approach this problem. Do i have to find the thevenin equivalent for each? How do I do that with the Zener diode? Any help would be much appreciated!