Q 12-14-113JEE MainJEE Main 2022 (26 Jun, Shift 2)Easy
Positive feedback is required by an amplifier to act as an oscillator. The feedback here means
Answer: (B) A portion of the output power is returned back to the input.
Feedback means returning part of the output to the input. With positive feedback, the returned signal is in phase with the input, so the oscillations sustain themselves without any external input.
Solution by Sreeraj P, M.Sc Physics