5. Using the node voltage method and constraint equation for Figure 4, write each of the needed simultaneous equations with labels to solve for the node voltages. Then solve for the value of
voltage from Va to Vb (15). Now solve for the Thevenin equivalent resistance from a-b. (10). Now
solve for IN (5)
160 i 20 WM
60 O 4 A
8040
Figure 4.