Arrange the following steps in the process of how negative feedback operates in an operational amplifier (op-amp): 1) The output voltage is compared with the input voltage; 2) The error signal is generated; 3) The feedback is applied to the inverting input; 4) The op-amp adjusts the output to minimize the error.

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1 → 2 → 3 → 4

2 → 1 → 3 → 4

3 → 4 → 1 → 2

4 → 3 → 2 → 1

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Answer

The op‑amp first compares its output voltage with the input voltage. This comparison creates a small difference, called the error signal. That error signal is then fed back to the inverting input. Finally, the op‑amp changes its output so the error becomes smaller, driving the system toward balance. In this way negative feedback keeps the output close to the desired value.

Detailed Explanation

The op‑amp first measures its own output and compares it with the input. Other options are incorrect because It assumes the error signal can exist before the amplifier knows the difference; It places the feedback before the amplifier learns there is a mistake.

Key Concepts

Negative Feedback in Op-Amps

Operational Amplifier Functionality

Signal Processing

Topic

Negative Feedback in Op-Amps

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Question 1

Arrange the following steps in the correct order to describe the functioning of an operational amplifier in a basic inverting amplifier configuration: A) The output voltage is fed back to the inverting input through a resistor, creating a feedback loop. B) The input signal is applied to the inverting input terminal. C) The op-amp amplifies the voltage difference between its inputs, resulting in an output voltage. D) The non-inverting input is connected to ground in this configuration.

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Question 2

In a negative feedback configuration of an op-amp, the output is connected back to the input to maintain stability and control. This process helps ensure that the voltages at the inverting and non-inverting inputs are kept equal due to the operation of the op-amp's high gain. This technique is referred to as __________ feedback.

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Question 3

Arrange the steps for designing a practical op-amp circuit using negative feedback to achieve a desired gain.

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Question 4

Arrange the following steps in the correct order for understanding the internal functioning of an operational amplifier (op-amp): A) Transistors amplify the input signal, B) The output signal is derived from the difference between the two inputs, C) Feedback mechanisms stabilize the gain, D) Op-amp is powered by a dual supply voltage.

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Question 5

Arrange the following steps in the correct order to describe the functioning of an operational amplifier in a basic inverting amplifier configuration: A) The output voltage is fed back to the inverting input through a resistor, creating a feedback loop. B) The input signal is applied to the inverting input terminal. C) The op-amp amplifies the voltage difference between its inputs, resulting in an output voltage. D) The non-inverting input is connected to ground in this configuration.

Arrange the following steps in the correct order to describe the functioning of an operational amplifier in a basic inverting amplifier configuration: A) The output voltage is fed back to the inverting input through a resistor, creating a feedback loop. B) The input signal is applied to the inverting input terminal. C) The op-amp amplifies the voltage difference between its inputs, resulting in an output voltage. D) The non-inverting input is connected to ground in this configuration.

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Question 8