Consider the following circuit, where source current = 10mA, hfe = 50 – McqOptions

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1.	Consider the following circuit, where source current = 10mA, hfe = 50, hie = 1100Ω, then for the transistor circuit, find output resistance RO and input resistance RI.
A.	RO = 0, RI = 21Ω
B.	RO = ∞, RI = 0Ω
C.	RO = ∞, RI = 21Ω
D.	RO = 10, RI = 21Ω
Answer» D. RO = 10, RI = 21Ω

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