Physics - Semiconductors Question with Solution | TestHub
When n-p-n junction transistor is used as an amplifier in common emitter mode,
Options:
Answer:
Solution:
In a common emitter (CE) amplifier configuration, the emitter terminal is common to both the input and output circuits.
The input signal is applied across the base-emitter junction, which is forward biased, resulting in a low input impedance.
The output is taken across the collector-emitter junction, where the collector-base junction is reverse biased, resulting in a high output impedance.
Additionally, in a CE amplifier, the output voltage is out of phase with the input voltage.
Therefore, the only correct statement is that the input signal is applied between the base and emitter and the output is obtained between the collector and emitter.
Answer: input signal is applied between the base and emitter and output is obtained between collector and emitter.
