Assume OPAMP to be ideal with infinite gain (a) and infinite input impedance
I am clearly able to see that the input impedance of this circuit is R1 (correct me if I am wrong) but I am unable too solve using feedback analysis on OPAMP
I have two queries regarding this circuit
Q1. As the OPAMP is taken to be ideal thus the input impedance of basic amplifier becomes infinite.
Thus feedback impedance should be infinity/loop gain which comes out to be infinite
Q2. If I am given the second diagram that is the circuit diagram with current source at input to OPAMP shown in above figure then can I still find input impedance without using source conversion and converting non ideal source to non ideal voltage source
If so then as the voltage across the resistance R1 in circuit with current source is zero thus resistance turns to be zero