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Which of the following is true in case of an unbiased p-n junction diode?
- a)Diffusion does not take place
- b)Diffusion of electrons & holes goes on infinitely
- c)There is zero electrical potential across the junctions
- d)Charges establish an electric field across the junctions
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Which of the following is true in case of an unbiased p-n junction dio...
A potential difference is established across the junctions due to recombination of holes & electrons. This growing filed (barrier potential) stops the further diffusion.
Most Upvoted Answer
Which of the following is true in case of an unbiased p-n junction dio...
And holes takes place but no current flowsc)Diffusion of electrons and holes takes place and a small current flowsd)Diffusion of electrons and holes takes place and a large current flows
c) Diffusion of electrons and holes takes place and a small current flows. In an unbiased p-n junction diode, there is a concentration gradient of electrons and holes on either side of the junction. This causes diffusion of electrons from the n-type region to the p-type region and diffusion of holes from the p-type region to the n-type region. However, these diffusion currents are balanced and no net current flows through the junction. This is because the diffusion of electrons creates a region of positive charge in the n-type region and the diffusion of holes creates a region of negative charge in the p-type region, which creates an electric field that opposes further diffusion. This equilibrium state is known as the depletion region.
c) Diffusion of electrons and holes takes place and a small current flows. In an unbiased p-n junction diode, there is a concentration gradient of electrons and holes on either side of the junction. This causes diffusion of electrons from the n-type region to the p-type region and diffusion of holes from the p-type region to the n-type region. However, these diffusion currents are balanced and no net current flows through the junction. This is because the diffusion of electrons creates a region of positive charge in the n-type region and the diffusion of holes creates a region of negative charge in the p-type region, which creates an electric field that opposes further diffusion. This equilibrium state is known as the depletion region.
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Which of the following is true in case of an unbiased p-n junction diode?a)Diffusion does not take placeb)Diffusion of electrons & holes goes on infinitelyc)There is zero electrical potential across the junctionsd)Charges establish an electric field across the junctionsCorrect answer is option 'D'. Can you explain this answer? for Electrical Engineering (EE) 2026 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about Which of the following is true in case of an unbiased p-n junction diode?a)Diffusion does not take placeb)Diffusion of electrons & holes goes on infinitelyc)There is zero electrical potential across the junctionsd)Charges establish an electric field across the junctionsCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following is true in case of an unbiased p-n junction diode?a)Diffusion does not take placeb)Diffusion of electrons & holes goes on infinitelyc)There is zero electrical potential across the junctionsd)Charges establish an electric field across the junctionsCorrect answer is option 'D'. Can you explain this answer?.
Which of the following is true in case of an unbiased p-n junction diode?a)Diffusion does not take placeb)Diffusion of electrons & holes goes on infinitelyc)There is zero electrical potential across the junctionsd)Charges establish an electric field across the junctionsCorrect answer is option 'D'. Can you explain this answer? for Electrical Engineering (EE) 2026 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about Which of the following is true in case of an unbiased p-n junction diode?a)Diffusion does not take placeb)Diffusion of electrons & holes goes on infinitelyc)There is zero electrical potential across the junctionsd)Charges establish an electric field across the junctionsCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following is true in case of an unbiased p-n junction diode?a)Diffusion does not take placeb)Diffusion of electrons & holes goes on infinitelyc)There is zero electrical potential across the junctionsd)Charges establish an electric field across the junctionsCorrect answer is option 'D'. Can you explain this answer?.
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