Question

The common emitter configuration of transistor gives:

• A. high voltage gain and high current gain
• B. unit voltage gain and high current gain
• C. high voltage gain and unit current gain
• D. unit voltage gain and unit current gain

Hint:

Common emitter configuration is most widely used because it gives both high voltage gain and high current gain.

Answer 1

The Correct Option is A

Concept:
A transistor can be connected in common base, common emitter or common collector configuration.

Step 1: Common emitter configuration.
In common emitter configuration, input is applied between base and emitter and output is taken between collector and emitter.

Step 2: Gain properties.
Common emitter configuration gives: \[ \text{high voltage gain} \] and \[ \text{high current gain} \]

Step 3: Final conclusion.
Therefore, common emitter transistor configuration is widely used for amplification. \[ \therefore \text{Correct Answer is (A)} \]