The approximate input impedance of the opamp circuit which has Ri = 10k, Rf = 100k, RL = 10k
A. $$\infty $$
B. 120k
C. 110k
D. 10k
Answer: Option C
Related Questions on OP amp
Current cannot flow to ground through .
A. a mechanical ground
B. an a.c. ground
C. a virtual ground
D. an ordinary ground
When a step-input is given to an OP-amp integrator, the output will be
A. A ramp
B. A sinusoidal wave
C. A rectangular wave
D. A triangular wave with dc bias
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