Question:
In a common emitter amplifier, the phase difference between input and output voltage is:
In a common emitter amplifier, the phase difference between input and output voltage is:
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CE amplifier = $180^{\circ}$ shift; CB/CC amplifier = $0^{\circ}$ shift.
Updated On: Apr 8, 2026
- $0^{\circ}$
- $90^{\circ}$
- $180^{\circ}$
- $270^{\circ}$
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The Correct Option is C
Solution and Explanation
Step 1: Concept
Phase relationship depends on the transistor configuration.
Step 2: Analysis
In a common emitter (CE) configuration, an increase in base-emitter voltage increases collector current, which increases the voltage drop across the load resistor, thereby decreasing the output collector voltage.
Step 3: Conclusion
This inverse relationship results in a $180^{\circ}$ phase shift.
Final Answer: (C)
Phase relationship depends on the transistor configuration.
Step 2: Analysis
In a common emitter (CE) configuration, an increase in base-emitter voltage increases collector current, which increases the voltage drop across the load resistor, thereby decreasing the output collector voltage.
Step 3: Conclusion
This inverse relationship results in a $180^{\circ}$ phase shift.
Final Answer: (C)
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