In a voltage series feedback amplifier with load RL, if Ri is the inpu – McqOptions

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1.	In a voltage series feedback amplifier with load RL, if Ri is the input resistance without feedback, then the input resistance with feedback is:a) Ri (1 + βAv)b) Ri (1 - βAv)c) \(\frac{{{R_i}}}{{1 + \beta {A_v}}}\)d) \(\frac{{{R_i}\beta {A_v}}}{{{R_L}}}\)of these statements:
A.	(a) and (c) are correct
B.	(b) and (d) are wrong
C.	(a) and (d) are wrong
D.	(c) and (a) are wrong
Answer» C. (a) and (d) are wrong

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