Published by:
CGP EDU Academic Team
Published on: August 22, 2026
An NPN transistor is used in common emitter configuration as an amplifier with 
load resistance. Signal voltage of 
is applied across the base-emitter. This produces a 
change in the collector current and 
change in the base current of the amplifier. The input resistance and voltage gain are:
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
Input current 
Output current 
Resistance out put 
Now 
.
Voltage gain 
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