In a transistor amplifier, if the input impedance is -84-j1.9 ‚âà� – McqOptions

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1.	In a transistor amplifier, if the input impedance is -84-j1.9 ‚âà√≠¬¨¬©, then the terminating impedance required to create enough instability is:$#
A.	-84-j1.9 ‚âà√≠¬¨¬©
B.	28+j1.9 ‚âà√≠¬¨¬©
C.	‚Äö√Ñ√∂‚àö√ë‚àö¬® (28+j1.9) ‚âà√≠¬¨¬©
D.	None of the mentioned
Answer» C. ‚Äö√Ñ√∂‚àö√ë‚àö¬® (28+j1.9) ‚âà√≠¬¨¬©

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