Question

1) What is an Op-Amp?
2) What is the input and output Impedance of an Op-Amp?

Answer 1

Explanation:

1)

Ans:Operational amplifier often known as op-amp is an active voltage amplifying component. It can amplify voltage based on the difference of voltage between its two inputs.

2)

Ans: The input impedance of op-amp between its differential inputs is very high usually in Mega Ohms to Tera Ohms (ideally infinite). That is why the input current of an op-amp is very low (almost negligible)

The output impedance of an op-amp is very low (ideally zero).

:))

Answer 2

Answer:

1) An operational amplifier is a DC-coupled high-gain electronic voltage amplifier with a differential input and, usually, a single-ended output. In this configuration, an op amp produces an output potential that is typically 100,000 times larger than the potential difference between its input terminals.

2) The output impedance of an ideal op amp is 0. This means that regardless of the amount of current drawn by an external load, the output voltage of the op amp remains unaffected. That is, no loading occurs. In the case of a practical op amp, there is some amount of output impedance

Hope it helps..