If the collector current of a transistor is 10 mA and the base current is 100 μA, then what is its beta?

This question was previously asked in
LPSC (ISRO) Technician B (Electronic Mechanic): Previous Year Paper (Held on 4 March 2018)
View all ISRO Technician Papers >
  1. 10
  2. 100/101
  3. 100
  4. 1

Answer (Detailed Solution Below)

Option 3 : 100
Free
IREL Tradesman Trainee (Electrician): DC Generator Quiz
5 Qs. 5 Marks 5 Mins

Detailed Solution

Download Solution PDF

Concept:

The current gain of the common emitter is given by:

 ----(1)

Calculation:

IC = 10 mA, IB = 100 μA

From equation (1)

β = 100

The current gain of common base

The common gain of a common collector is given by:

Latest ISRO Technician Updates

Last updated on May 28, 2025

-> ISRO Technician recruitment notification 2025 has been released. 

-> Candidates can apply for the ISRO recruitment 2025 for Technicians from June 2. 

-> A total of 64 vacancies are announced for the recruitment of Technician. 

-> The selection of the candidates is based on their performance in the Written Exam and Skill Test. 

-> Candidates who want a successful selection must refer to the ISRO Technician Previous Year Papers to increase their chances of selection for the Technician post. 

Hot Links: teen patti master old version online teen patti teen patti game paisa wala teen patti 500 bonus