Unless stated otherwise, from now on diodes should always be modeled as on open circuit when off and a constant 0.6 V when on. Figure 1. Diode Circuit 1 Problem 2. Use Figure 1. R=2kΩ,VS=4V 1. Set Vx=2V. Guess the diode is off. Find VD. Is the diode really off? Explain. 2. Set Vx=2V. Guess the diode is on. Find ID. Is the diode really on? Explain. 3. Set Vx=5V. Guess the diode is on. Find I0. Is the diode really on? Explain. 4. Set Vx=5V. Guess the diode is off. Find VD. Is the diode really off? Explain. 5. For each value of Vx, find VR 6. Plot Vx vs. VR