Calculate the gain of an amplifier in which the collector resistance Rc is 5 kilo Ohm. The input resistance between the base and emitter of a typical transistor is 2.5 kilo Ohm and the value of its β = 100. Answer (250) 



Given:

Collector Resistance = `\R_C` =  5 kΩ = 5x10³ Ω

Base-Emitter Resistance = `\r_{ie}` =  2.5 kΩ = 2.5x10³ Ω

Current Gain = β = 100


To Find:

Voltage gain = = ?



Solution:


The Voltage Gain can be calculated by a formula


A = - Î²`\frac {R_C}{r_{ie}}` 

putting values

A = - 100 ï½˜ `\frac {5x10³ Ω}{2.5x10³ Ω}`

A = - 100 ï½˜ 2

A = - 200 ---------------Ans.

The -ve sign shows that input and output are out of phase at an angle of 180°.



************************************

Shortcut Links For 


1. Website for School and College Level Physics   
2. Website for School and College Level Mathematics  
3. Website for Single National Curriculum Pakistan - All Subjects Notes 

© 2022-Onwards by Academic Skills and Knowledge (ASK    

Note:  Write me in the comment box below for any query and also Share this information with your class-fellows and friends.