JEE Main202331 Jan 2023Evening ShiftPhysicsSemiconductorsActual
Given below are two statements: Statement I : In a typical transistor, all three regions emitter, base and collector have same doping level. Statement II : in a transistor, collector is the thickest and base is the thinnest segment. In the light of the above statements, choose the most appropriate answer from the options given below.
Options
- ABoth Statement I and Statement II are correct
- BBoth Statement I and Statement II are incorrect
- CStatement I is incorrect but Statement II is correct
- DStatement I is correct but Statement II is incorrect
Correct answer
C. Statement I is incorrect but Statement II is correct
Step-by-step solution
The doping level of collector is intermediate between the heavy doping of emitter and the light doping of the base. The doping level and width of base are kept light so that most of the charge carriers are transferred from emitter to collector without much recombination.