When we amplify the signal on an analog circuit, we also amplify any noise that is present on the circuit.

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Quizplus · Accepted Answer

This is because noise is a random, unwanted fluctuation in the signal that exists naturally in any circuit. When we amplify the signal, we also amplify the noise, which can result in a degraded signal-to-noise ratio and reduced overall signal quality. Techniques such as filtering and shielding can be used to reduce noise in analog circuits.

When We Amplify the Signal on an Analog Circuit, We