The circuit shown in (Figure 1) is operating in the sinusoidal steady state. The capacitor is adjusted until the current ig is in phase with the sinusoidal voltage vg

.

A-Find the minimum value of C if vg=60cos5000tV.

B-Find the maximum value of C if vg=60cos5000tV.

C-Give the steady-state expression for ig when C has the value found in Part A. Suppose that ig(t)=I1cos(?1t+?1), where ?180?<?1?180?. Determine the values I1, ?1, ?1.

D-Give the steady-state expression for ig when C has the value found in Part B. Suppose that ig(t)=I2cos(?2t+?2), where ?180?<?2?180?. Determine the values I2, ?2, ?2.
 

800 mH 10 kN