Which type of device is considered active device because it adds power to a signal?
A) mixer
B) filter
C) antenna
D) amplifier

Question

Quizplus · Accepted Answer

An amplifier is an active device because it adds power to a signal. It increases the amplitude of the signal and boosts its strength to improve its quality and range. The other options, mixer, filter, and antenna, are passive devices that do not add power to the signal. A mixer combines two or more signals, a filter removes unwanted frequencies from a signal, and an antenna receives and transmits signals without adding power.

Which Type of Device Is Considered Active Device Because It