Question

When input is given to an op-amp in open loop condition the output voltage is infinite​

Answer 1

When an input is given to an op-amp in open loop condition, then the output voltage is infinite​ and the loop gain is also infinite.

• Since the ideal op amp input resistance is zero, there will be an open circuit at the origin, such that the current at both input terminals is null.
• There is no current through the input resistance, and also no voltage, thus the drop will occur between the input terminals
• In an ideal op amp, there is an infinite gain in open loop which means that at two inpute terminals, if any voltage is differential, then it will result in an infinite voltage at the output.