Which term best describes electronics devices that are solid-state and have no moving parts?

Which term best describes electronics devices that are solid-state and have no moving parts?

• A. Active filters
• B. Band-pass
• C. Solid-state
• D. Passive filters

Answer: (C)

Solid-state describes electronics built with semiconductor components like diodes and transistors and, importantly, with no moving mechanical parts. This term directly captures the idea of devices made from solid materials rather than vacuum tubes or electromechanical parts, which do have moving components. The other terms refer to how a circuit behaves or functions (band-pass as a filter type) or whether a circuit uses active gain versus purely passive components; they don’t specify the absence of moving parts. So, solid-state is the best fit for devices that are solid-state and have no moving parts.

Solid-state describes electronics built with semiconductor components like diodes and transistors and, importantly, with no moving mechanical parts. This term directly captures the idea of devices made from solid materials rather than vacuum tubes or electromechanical parts, which do have moving components. The other terms refer to how a circuit behaves or functions (band-pass as a filter type) or whether a circuit uses active gain versus purely passive components; they don’t specify the absence of moving parts. So, solid-state is the best fit for devices that are solid-state and have no moving parts.