Home
Class 12
PHYSICS
In a transistor if collector current is ...

In a transistor if collector current is 25 mA and base current is 1 mA, then current amplification factor `alpha` is

A

`(25)/(24)`

B

`(24)/(25)`

C

`(25)/(26)`

D

`(26)/(25)`

Text Solution

Verified by Experts

The correct Answer is:
C
Here, `I_(c)=25mA,I_(b)=1mA`
`thereforeI_(e)=I_(b)+I_(c)=(1+25)mA=26mA`
and `alpha=(I_(c))/(I_(e))=(25mA)/(26mA)=(25)/(26)`
Promotional Banner

Topper's Solved these Questions

  • SOLID STATE ELECTRONS

    MTG-WBJEE|Exercise WB JEE WORKOUT (CATEGORY 3 : Single Option Correct Type)|15 Videos

  • SOLID STATE ELECTRONS

    MTG-WBJEE|Exercise WB JEE WORKOUT (CATEGORY 3 : One or More than one option Correct Type)|10 Videos

  • PARTICLE NATURE OF LIGHT AND WAVE PARTICLE DUALISM

    MTG-WBJEE|Exercise WB JEE PREVIOUS YEARS QUESTIONS|15 Videos

  • THERMODYNAMICS

    MTG-WBJEE|Exercise WB JEE Previous Years Questions|12 Videos

Similar Questions

Explore conceptually related problems

In a transistor circuit, the emitter current is 50 mA and base current in 2 mA. The collector current is

If collector current is 120 mA and base current is 2 mA and resistance gain is 3, what is power gain ?

In a common base mode of transistor, collector current is 5.488 mA for an emitter current of 5.60mA . The value of the base current amplification factor (beta) will be :

For a transistor emitter current is 40 mA and collector current is 35 mA find the beta of transistor

In a transistor, the collector current varies by 0.49 mA and emitter current varies by 0.50 mA.

In p-n-p transistor the base current is 1 mA and the collector current is 10 mA . The emitter current is

A transistor has a base current of 1 mA and emitter current 100 mA . The current transfer ratio will be

A transistor has a base current of 1 mA and emitter current 100 mA . The current transfer ratio will be

In a p-n-p transistor the emitter current is 10 mA and the collector current is 9 mA . Then the base current is

In a common base mode of a transition , the collector current is 5.488 mA for an emitter currect of 5.60 mA . The value of the base current amplification factor (beta) will be