For an ideal op-amp configured as a buffer:
- The output voltage follows the input voltage exactly.
- This configuration is used to provide impedance matching between different stages of a circuit.
A buffer amplifier, also known as a voltage follower, is a circuit configuration in which the input signal is directly coupled to the non-inverting terminal of the op-amp, and the output is connected to the inverting terminal. This results in the output voltage being equal to the input voltage, meaning the op-amp provides a high input impedance and a low output impedance without any amplification. - In the case of a buffer, there is no difference in voltage between the input and output, making the circuit behave as a buffer or voltage follower. Thus, the correct answer is Buffer (Option B).
