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  4. The positive feedback is required by an amplifier to act an oscillator. The feedback here means :

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Q. The positive feedback is required by an amplifier to act an oscillator. The feedback here means :

JEE MainJEE Main 2022Semiconductor Electronics: Materials Devices and Simple Circuits

Solution:

When the amplifier connects with positive feedback, it acts as the oscillator the feedback here is positive feedback which means some amount of voltage is given to the input.