# Electrical Engineering - Circuit Theorems in AC Analysis - Discussion

### Discussion :: Circuit Theorems in AC Analysis - General Questions (Q.No.5)

5.

Referring to the given circuit, what is ZTH if R1 is changed to 220 ?

 [A]. 22512.1° [B]. 22577.9° [C]. 4677.9° [D]. 4612.1°

Explanation:

No answer description available for this question.

 Anonymous said: (Jan 4, 2012) Hi, Since the source has 0Hz then it acts as a DC voltage source. Shouldn't the inductor act as a short circuit?

 Khyati said: (Sep 2, 2014) Here parallel combination of R1 = 220 and XL will give the answer.

 Keith said: (Mar 18, 2015) Where did you get 220?

 Sujitha said: (Jun 11, 2016) Can any explain this question in detail?

 Mathew said: (May 27, 2017) But w.r.t AB, XL and R1 should be in series. So the answer should be A.

 Saran said: (Aug 28, 2017) Please, Somebody can explain this?

 Thiru said: (Sep 18, 2017) Give an explanation for this.

 Shree said: (Sep 4, 2018) Here to find Zth vs short-circuit and RL open circuit. R1 parallel with Xl. Zth= 220*47i/220+47i. =45.96∠77.94.

 Haneen said: (May 14, 2022) Can you explane this.