Thevenin's theorem provides a method for the reduction of any ac circuit to an equivalent form consisting of an equivalent current source in parallel with an equivalent impedance.

Referring to the given circuit, what is V_TH if VS = 12 ∠0° V?

A. 4.69 ∠38.7° V

B. 9.38 ∠38.7° V

C. 12 ∠0° V

D. 6 ∠0° V

Referring to the given circuit, find Z_TH if VS is 180° V.

A. 9.82 ∠-51.3° kΩ

B. 9.38 ∠-51.3° kΩ

C. 180 ∠-38.3° kΩ

D. 19.2 ∠-38.3° kΩ

Determine V_TH when R1 is 180 Ω and XL is 90 Ω.

A. 135∠63.4° V

B. 13.5∠63.4° V

C. 12.2∠0° V

D. 122∠0° V

The two basic components of a Thevenin equivalent ac circuit are

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