Q. A $n - p - n$ transistor having a.c. current gain of 50 is to be used to make an amplifier of power gain of 300. What will be the voltage gain of the amplifier
A) 8.5
B) 6
C) 4
D) 3
Explanation
(b) Power gain $=$ voltage gain $\times$ current gain
Voltage gain $= \frac{Power\ gain}{Current\ gain} = \frac{300}{50} = 6$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.