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.
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.
Show Hint
- Both Statement I and Statement II are incorrect
- Statement I is correct but Statement II is incorrect
- Both Statement I and Statement II are correct
- Statement I is incorrect but Statement II is correct
The Correct Option is D
Solution and Explanation
Statement I: In a typical transistor, the doping levels of the emitter, base, and collector are not the same. The emitter is heavily doped, the base is lightly doped, and the collector is moderately doped. Therefore, Statement I is incorrect.
Statement II: In a transistor, the collector is the thickest because it needs to dissipate heat, and the base is the thinnest to allow efficient current flow. Therefore, Statement II is correct.
Thus, the correct answer is: Statement I is incorrect but Statement II is correct.
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Concepts Used:
Semiconductors
Semiconductors are a crystalline solid materials, whose electrical conductivity lies between a conductor and an insulator. Semiconductors are mainly used in the manufacturing of electronic devices like capacitors, transistors, diodes, Integrated circuits, etc.
Properties of Semiconductor:
- Semiconductor acts like an insulator at Zero Kelvin. On increasing the temperature, it works as a conductor.
- Due to their exceptional electrical properties, semiconductors can be modified by doping to make semiconductor devices suitable for energy conversion, switches, and amplifiers.
- Lesser power losses.
Uses of Semiconductor:
- Semiconductors are widely used in manufacturing electronics devices like transistors, diodes, sensors, integrated circuits.
- Semiconductors are widely used in all electronic devices, like mobile phones, digital cameras, communication devices, trains, ATMs, etc.