Electrical Engineering (EE) Exam > Electrical Engineering (EE) Questions > In a p-n Junction with no externally applied ...
Start Learning for Free
In a p-n Junction with no externally applied voltage, the drift and diffusion components of the hole and electron currents:
- a)Must sum to zero separately
- b)Must sum to unity separately
- c)Must sum to zero
- d)Must sum to unity
Correct answer is option 'C'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
In a p-n Junction with no externally applied voltage, the drift and di...
In a p-n Junction when no bias voltage is applied, the net current is zero.
Hence the drift and diffusion components of the hole and electron currents must sum to zero.
Most Upvoted Answer
In a p-n Junction with no externally applied voltage, the drift and di...
Explanation:
Drift and Diffusion Components in a p-n Junction:
In a p-n junction with no externally applied voltage, the drift and diffusion components of the hole and electron currents must sum to zero. This is because in thermal equilibrium, the total current in the p-n junction is zero.
Drift Current:
- The drift current in a semiconductor is due to the motion of charge carriers in response to an electric field.
- In a p-n junction without external bias, the drift current of electrons and holes will be equal in magnitude but opposite in direction.
- The drift current is proportional to the charge carrier concentration and the electric field strength.
Diffusion Current:
- The diffusion current in a semiconductor is due to the concentration gradient of charge carriers.
- In a p-n junction without external bias, there will be a diffusion of electrons from the n-side to the p-side and a diffusion of holes from the p-side to the n-side.
- The diffusion current is proportional to the concentration gradient of charge carriers.
Total Current:
- In thermal equilibrium, the drift and diffusion components of the hole and electron currents will balance each other out, resulting in a total current of zero.
- This balance ensures that there is no net flow of charge carriers across the p-n junction in the absence of an external voltage.
Therefore, the drift and diffusion components of the hole and electron currents in a p-n junction with no externally applied voltage must sum to zero.
Drift and Diffusion Components in a p-n Junction:
In a p-n junction with no externally applied voltage, the drift and diffusion components of the hole and electron currents must sum to zero. This is because in thermal equilibrium, the total current in the p-n junction is zero.
Drift Current:
- The drift current in a semiconductor is due to the motion of charge carriers in response to an electric field.
- In a p-n junction without external bias, the drift current of electrons and holes will be equal in magnitude but opposite in direction.
- The drift current is proportional to the charge carrier concentration and the electric field strength.
Diffusion Current:
- The diffusion current in a semiconductor is due to the concentration gradient of charge carriers.
- In a p-n junction without external bias, there will be a diffusion of electrons from the n-side to the p-side and a diffusion of holes from the p-side to the n-side.
- The diffusion current is proportional to the concentration gradient of charge carriers.
Total Current:
- In thermal equilibrium, the drift and diffusion components of the hole and electron currents will balance each other out, resulting in a total current of zero.
- This balance ensures that there is no net flow of charge carriers across the p-n junction in the absence of an external voltage.
Therefore, the drift and diffusion components of the hole and electron currents in a p-n junction with no externally applied voltage must sum to zero.
Attention Electrical Engineering (EE) Students!
To make sure you are not studying endlessly, EduRev has designed Electrical Engineering (EE) study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Electrical Engineering (EE).
|
Explore Courses for Electrical Engineering (EE) exam
|
|
Similar Electrical Engineering (EE) Doubts
Top Courses for Electrical Engineering (EE)View all
In a p-n Junction with no externally applied voltage, the drift and diffusion components of the hole and electron currents:a)Must sum to zero separatelyb)Must sum to unity separatelyc)Must sum to zerod)Must sum to unityCorrect answer is option 'C'. Can you explain this answer?
Question Description
In a p-n Junction with no externally applied voltage, the drift and diffusion components of the hole and electron currents:a)Must sum to zero separatelyb)Must sum to unity separatelyc)Must sum to zerod)Must sum to unityCorrect 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 In a p-n Junction with no externally applied voltage, the drift and diffusion components of the hole and electron currents:a)Must sum to zero separatelyb)Must sum to unity separatelyc)Must sum to zerod)Must sum to unityCorrect 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 In a p-n Junction with no externally applied voltage, the drift and diffusion components of the hole and electron currents:a)Must sum to zero separatelyb)Must sum to unity separatelyc)Must sum to zerod)Must sum to unityCorrect answer is option 'C'. Can you explain this answer?.
In a p-n Junction with no externally applied voltage, the drift and diffusion components of the hole and electron currents:a)Must sum to zero separatelyb)Must sum to unity separatelyc)Must sum to zerod)Must sum to unityCorrect 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 In a p-n Junction with no externally applied voltage, the drift and diffusion components of the hole and electron currents:a)Must sum to zero separatelyb)Must sum to unity separatelyc)Must sum to zerod)Must sum to unityCorrect 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 In a p-n Junction with no externally applied voltage, the drift and diffusion components of the hole and electron currents:a)Must sum to zero separatelyb)Must sum to unity separatelyc)Must sum to zerod)Must sum to unityCorrect answer is option 'C'. Can you explain this answer?.
Solutions for In a p-n Junction with no externally applied voltage, the drift and diffusion components of the hole and electron currents:a)Must sum to zero separatelyb)Must sum to unity separatelyc)Must sum to zerod)Must sum to unityCorrect 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 In a p-n Junction with no externally applied voltage, the drift and diffusion components of the hole and electron currents:a)Must sum to zero separatelyb)Must sum to unity separatelyc)Must sum to zerod)Must sum to unityCorrect answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
In a p-n Junction with no externally applied voltage, the drift and diffusion components of the hole and electron currents:a)Must sum to zero separatelyb)Must sum to unity separatelyc)Must sum to zerod)Must sum to unityCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for In a p-n Junction with no externally applied voltage, the drift and diffusion components of the hole and electron currents:a)Must sum to zero separatelyb)Must sum to unity separatelyc)Must sum to zerod)Must sum to unityCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of In a p-n Junction with no externally applied voltage, the drift and diffusion components of the hole and electron currents:a)Must sum to zero separatelyb)Must sum to unity separatelyc)Must sum to zerod)Must sum to unityCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice In a p-n Junction with no externally applied voltage, the drift and diffusion components of the hole and electron currents:a)Must sum to zero separatelyb)Must sum to unity separatelyc)Must sum to zerod)Must sum to unityCorrect 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
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup