Referring to the given figure, determine Z_TH as seen by RL if R1 is changed to 3.3 kΩ.

A. 4.69 ∠38.7° V B. 9.38 ∠38.7° V C. 12 ∠0° V D. 6 ∠0° V

A. 9.82 ∠-51.3° kΩ B. 9.38 ∠-51.3° kΩ C. 180 ∠-38.3° kΩ D. 19.2 ∠-38.3° kΩ

A. 135∠63.4° V B. 13.5∠63.4° V C. 12.2∠0° V D. 122∠0° V

A. The equivalent voltage source and the equivalent series impedance B. The equivalent voltage source and the equivalent series resistance C. The equivalent voltage source and the equivalent parallel impedance D. The equivalent voltage source and the equivalent parallel resistance