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

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1.	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¬∞
Answer» D. 4612.1¬∞

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