Electronics and Communication Engineering (ECE) Exam > Electronics and Communication Engineering (ECE) Questions > In an unbiased P-N Junction zero current impl...
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In an unbiased P-N Junction zero current implies that
- a)The potential biases has disappeared
- b)No. of holes diffusing from P-side to N-side equals the no. of electrons diffusing from N-side to P-side
- c)Total current crossing Junction from P-side to N-side equals the total current crossing Junction from N-side top-side
- d)No carriers cross the Junction
Correct answer is option 'C'. Can you explain this answer?
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In an unbiased P-N Junction zero current implies thata)The potential b...
Explanation:
P-N Junction is formed when a P-type semiconductor and an N-type semiconductor are joined together. In an unbiased P-N Junction, there is no external voltage applied to the Junction. Therefore, the potential difference across the Junction is zero.
When there is zero current flowing through the Junction, it implies that the total current crossing the Junction from P-side to N-side is equal to the total current crossing the Junction from N-side to P-side. This is known as the law of conservation of charge.
The reason behind this is that in a P-N Junction, there are diffusion and drift currents. Diffusion current is caused by the diffusion of charge carriers from high concentration to low concentration, while drift current is caused by the electric field present in the Junction.
In an unbiased Junction, the diffusion current is equal and opposite in direction to the drift current. Therefore, the net current flowing through the Junction is zero.
Hence, option 'C' is the correct answer.
P-N Junction is formed when a P-type semiconductor and an N-type semiconductor are joined together. In an unbiased P-N Junction, there is no external voltage applied to the Junction. Therefore, the potential difference across the Junction is zero.
When there is zero current flowing through the Junction, it implies that the total current crossing the Junction from P-side to N-side is equal to the total current crossing the Junction from N-side to P-side. This is known as the law of conservation of charge.
The reason behind this is that in a P-N Junction, there are diffusion and drift currents. Diffusion current is caused by the diffusion of charge carriers from high concentration to low concentration, while drift current is caused by the electric field present in the Junction.
In an unbiased Junction, the diffusion current is equal and opposite in direction to the drift current. Therefore, the net current flowing through the Junction is zero.
Hence, option 'C' is the correct answer.
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In an unbiased P-N Junction zero current implies thata)The potential b...
See in a pn junction no current implies that formation depletion layer so initially flow of holes from p to n and electrons from n to p after that as holes are in n teritory and form bond and same as vice versa but not go outside diode.
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In an unbiased P-N Junction zero current implies thata)The potential biases has disappearedb)No. of holes diffusing from P-side to N-side equals the no. of electrons diffusing from N-side to P-sidec)Total current crossing Junction from P-side to N-side equals the total current crossing Junction from N-side top-sided)No carriers cross the JunctionCorrect answer is option 'C'. Can you explain this answer?
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In an unbiased P-N Junction zero current implies thata)The potential biases has disappearedb)No. of holes diffusing from P-side to N-side equals the no. of electrons diffusing from N-side to P-sidec)Total current crossing Junction from P-side to N-side equals the total current crossing Junction from N-side top-sided)No carriers cross the JunctionCorrect answer is option 'C'. Can you explain this answer? for Electronics and Communication Engineering (ECE) 2024 is part of Electronics and Communication Engineering (ECE) preparation. The Question and answers have been prepared according to the Electronics and Communication Engineering (ECE) exam syllabus. Information about In an unbiased P-N Junction zero current implies thata)The potential biases has disappearedb)No. of holes diffusing from P-side to N-side equals the no. of electrons diffusing from N-side to P-sidec)Total current crossing Junction from P-side to N-side equals the total current crossing Junction from N-side top-sided)No carriers cross the JunctionCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Electronics and Communication Engineering (ECE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In an unbiased P-N Junction zero current implies thata)The potential biases has disappearedb)No. of holes diffusing from P-side to N-side equals the no. of electrons diffusing from N-side to P-sidec)Total current crossing Junction from P-side to N-side equals the total current crossing Junction from N-side top-sided)No carriers cross the JunctionCorrect answer is option 'C'. Can you explain this answer?.
In an unbiased P-N Junction zero current implies thata)The potential biases has disappearedb)No. of holes diffusing from P-side to N-side equals the no. of electrons diffusing from N-side to P-sidec)Total current crossing Junction from P-side to N-side equals the total current crossing Junction from N-side top-sided)No carriers cross the JunctionCorrect answer is option 'C'. Can you explain this answer? for Electronics and Communication Engineering (ECE) 2024 is part of Electronics and Communication Engineering (ECE) preparation. The Question and answers have been prepared according to the Electronics and Communication Engineering (ECE) exam syllabus. Information about In an unbiased P-N Junction zero current implies thata)The potential biases has disappearedb)No. of holes diffusing from P-side to N-side equals the no. of electrons diffusing from N-side to P-sidec)Total current crossing Junction from P-side to N-side equals the total current crossing Junction from N-side top-sided)No carriers cross the JunctionCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Electronics and Communication Engineering (ECE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In an unbiased P-N Junction zero current implies thata)The potential biases has disappearedb)No. of holes diffusing from P-side to N-side equals the no. of electrons diffusing from N-side to P-sidec)Total current crossing Junction from P-side to N-side equals the total current crossing Junction from N-side top-sided)No carriers cross the JunctionCorrect answer is option 'C'. Can you explain this answer?.
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