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Question: Answered & Verified by Expert
In a common emitter amplifier circuit using an n-p-n transistor, the phase difference between the input and the output voltages will be:
PhysicsSemiconductorsJEE MainJEE Main 2017 (02 Apr)
Options:
  • A 180°
  • B 45°
  • C 90°
  • D 135°
Solution:
1947 Upvotes Verified Answer
The correct answer is: 180°

In a common emitter amplifier circuit, the input voltage must be forward biased and output voltage must be reversed biased.

So the input voltage must be out of phase of output voltage.

Therefore, the phase difference between the input and output voltage is 180°.

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