Question
Which of the following is a resonant or tuned circuit?
Answer Options
- A) An inductor and a capacitor in series or parallel
- B) A linear voltage regulator
- C) A resistor circuit used for reducing standing wave ratio
- D) A circuit designed to provide high-fidelity audio
Correct Answer: A
Explanation
A resonant or tuned circuit is an electronic circuit designed to be highly selective, reacting strongly to signals at one specific frequency while ignoring others. This is always accomplished by coupling an energy-storing magnetic component with an energy-storing electric component.
Therefore, a resonant circuit is defined as an inductor and a capacitor in series or parallel (T6D08). They are the fundamental components used in radio receivers and transmitters to select and amplify only the desired operating frequency.
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