Non-inverting amplifier circuits have:
Correct answer: A. A very high input impedance
- A. A very high input impedance
- B. A very low input impedance
- C. A high output impedance
- D. None of the above options is correct
Explanation
Option A) Operational amplifiers have high input impedance and low output impedance because of the concept of a voltage divider, which is how voltage is divided in a circuit depending on the amount of impedance present in given parts of a circuit. Operational amplifiers are voltage-gain devices.Option B) A very low input impedance is not correct for non-inverting amplifier circuits. Non-inverting amplifiers have a high input impedance, which means that they don't draw much current from the input signal source, and they don't load the source.Option C) A high output impedance is not correct for non-inverting amplifier circuits. Non-inverting amplifiers have a low output impedance, which means that they can drive low-impedance loads without significant loss of signal voltage.Option D) This is an incorrect answer.
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