What is the purpose of a low-pass filter in electronic circuits?

A. To allow low-frequency signals to pass and block high-frequency signals
B. To block all frequencies
C. To pass only high-frequency signals
D. To amplify the signal

Explanation:

A low-pass filter allows low-frequency signals to pass while attenuating high-frequency signals, used to eliminate noise in communication systems.

Tags: Electronics & Communication MCQs, Electronics and Communication Engineering