Referring to the given circuit, what is ZTH if R1 is changed to 220 Ω – McqOptions

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1.	Referring to the given circuit, what is ZTH if R1 is changed to 220 Ω?
A.	25 ∠12.1° Ω
B.	25 ∠77.9° Ω
C.	6 ∠77.9° Ω
D.	6 ∠12.1° Ω
Answer» D. 6 ∠12.1° Ω

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