What is the characteristic feature of a low-pass filter?

A. It passes low-frequency signals and attenuates high-frequency signals
B. It passes all signals regardless of frequency
C. It amplifies low-frequency signals
D. It only allows high-frequency signals to pass

Explanation:

A low-pass filter allows low-frequency signals to pass and attenuates high-frequency signals, often used in signal processing to remove noise.

Tags: Network Theory MCQ, Electronics and Communication Engineering