Problems -
Problem 1 - Find v0 in the op amp circuit of Fig. 1.
Problem 2 - Compute i0(t) in the op amp circuit in Fig. 2 if vs = 4 cos(104t).
Problem 3 - If the input impedance is defined as Zin = vs/Is, find the input impedance of the op amp circuit in Fig. 3 when R1 = 10 kΩ, R2 = 20 kΩ, X1 = 10 nF, C1 = 20 nF and ω = 5000 rad/s.