Electrical Engineering (EE) Exam  >  Electrical Engineering (EE) Questions  >  A common emitter transistor amplifier has a c... Start Learning for Free
A common emitter transistor amplifier has a collector current of 10mA, when its base current is 25µA at the room, temperature. What is input resistance?
  • a)
    3kΩ
  • b)
    5kΩ
  • c)
    1kΩ
  • d)
    7kΩ
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
A common emitter transistor amplifier has a collector current of 10mA,...
We know, β/gm=ri
= (IC/IB)/(IC/VT)=VT/IB=25m/25µ=1k.
View all questions of this test
Most Upvoted Answer
A common emitter transistor amplifier has a collector current of 10mA,...
In order to determine the current gain of the common emitter transistor amplifier, we need to know the value of the base current and the collector current.

Given:
Collector current (IC) = 10mA
Base current (IB) = 25

The current gain (β) of a transistor is defined as the ratio of collector current (IC) to base current (IB). Mathematically, it can be expressed as:

β = IC / IB

So, substituting the given values:

β = 10mA / 25 = 0.4

Therefore, the current gain (β) of the common emitter transistor amplifier is 0.4.
Explore Courses for Electrical Engineering (EE) exam

Top Courses for Electrical Engineering (EE)

A common emitter transistor amplifier has a collector current of 10mA, when its base current is 25µA at the room, temperature. What is input resistance?a)3kΩb)5kΩc)1kΩd)7kΩCorrect answer is option 'C'. Can you explain this answer?
Question Description
A common emitter transistor amplifier has a collector current of 10mA, when its base current is 25µA at the room, temperature. What is input resistance?a)3kΩb)5kΩc)1kΩd)7kΩCorrect answer is option 'C'. Can you explain this answer? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about A common emitter transistor amplifier has a collector current of 10mA, when its base current is 25µA at the room, temperature. What is input resistance?a)3kΩb)5kΩc)1kΩd)7kΩCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A common emitter transistor amplifier has a collector current of 10mA, when its base current is 25µA at the room, temperature. What is input resistance?a)3kΩb)5kΩc)1kΩd)7kΩCorrect answer is option 'C'. Can you explain this answer?.
Solutions for A common emitter transistor amplifier has a collector current of 10mA, when its base current is 25µA at the room, temperature. What is input resistance?a)3kΩb)5kΩc)1kΩd)7kΩCorrect answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Electrical Engineering (EE). Download more important topics, notes, lectures and mock test series for Electrical Engineering (EE) Exam by signing up for free.
Here you can find the meaning of A common emitter transistor amplifier has a collector current of 10mA, when its base current is 25µA at the room, temperature. What is input resistance?a)3kΩb)5kΩc)1kΩd)7kΩCorrect answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of A common emitter transistor amplifier has a collector current of 10mA, when its base current is 25µA at the room, temperature. What is input resistance?a)3kΩb)5kΩc)1kΩd)7kΩCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for A common emitter transistor amplifier has a collector current of 10mA, when its base current is 25µA at the room, temperature. What is input resistance?a)3kΩb)5kΩc)1kΩd)7kΩCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of A common emitter transistor amplifier has a collector current of 10mA, when its base current is 25µA at the room, temperature. What is input resistance?a)3kΩb)5kΩc)1kΩd)7kΩCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice A common emitter transistor amplifier has a collector current of 10mA, when its base current is 25µA at the room, temperature. What is input resistance?a)3kΩb)5kΩc)1kΩd)7kΩCorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice Electrical Engineering (EE) tests.
Explore Courses for Electrical Engineering (EE) exam

Top Courses for Electrical Engineering (EE)

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev