Question

A voltage source having a high input impedance and a very low output impedance is known as​

Answer 1

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Answer 2

A voltage source having a high input impedance and a very low output impedance is known as​ Op Amp.

• High impedance means that a point in a circuit (a node) allows a relatively small amount of current through, per unit of applied voltage at that point.
• Low output impedance is desired to suck the maximum current from the circuit.
• High impedance means the circuit draws or gives little power to the signal. Low impedance means the circuit draws or gives more power to the signal.
• An operational amplifier is a DC-coupled high-gain electronic voltage amplifier with a differential input and, usually, a single-ended output. It has high input impedance and low output impedance because of the concept of a voltage divider.

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