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Which of the following is true in case of a forward biased p-n junction diode?
- a)The positive terminal of the battery sucks electrons from the p-region
- b)The positive terminal of the battery injects electrons into the p-region
- c)The negative terminal of the battery sucks electrons from the p-region
- d)None of the above mentioned statements are true
Correct answer is option 'A'. Can you explain this answer?
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Which of the following is true in case of a forward biased p-n junctio...
The diode is forward biased, positive is connected to p & vice-versa, as such batter provides EMF to drive electrons from n-region to p-region.
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Which of the following is true in case of a forward biased p-n junctio...
**Explanation:**
A forward biased p-n junction diode is a diode in which the positive terminal of the battery is connected to the p-side (anode) and the negative terminal of the battery is connected to the n-side (cathode) of the diode.
When a forward voltage is applied to a p-n junction diode, the following processes occur:
**1. Formation of the depletion region:**
- Initially, the p-n junction diode is in the unbiased state, where there is no external voltage applied.
- In this state, the p-side is positively charged due to the presence of holes (positive charge carriers), and the n-side is negatively charged due to the presence of electrons (negative charge carriers).
- The diffusion of charge carriers across the junction creates a region called the depletion region, which lacks any free charge carriers.
**2. Forward biasing:**
- When a positive voltage is applied to the p-side of the diode and a negative voltage is applied to the n-side, the diode is said to be forward biased.
- This forward bias reduces the width of the depletion region, allowing free charge carriers to move across the junction.
**3. Electron flow:**
- In a forward biased p-n junction diode, the positive terminal of the battery is connected to the p-side (anode) of the diode.
- The positive terminal attracts the negatively charged electrons from the n-side of the diode.
- These electrons move through the external circuit, creating a current flow.
**4. Hole flow:**
- As the electrons move from the n-side to the p-side, they leave behind positively charged holes in the n-side.
- These holes are attracted by the positive terminal of the battery and move towards it.
- The movement of holes through the p-side constitutes a flow of positive charges, creating a current flow in the opposite direction.
Therefore, in a forward biased p-n junction diode, the positive terminal of the battery sucks electrons from the p-region (anode). This is because the positive terminal attracts the negatively charged electrons, allowing them to flow through the external circuit.
A forward biased p-n junction diode is a diode in which the positive terminal of the battery is connected to the p-side (anode) and the negative terminal of the battery is connected to the n-side (cathode) of the diode.
When a forward voltage is applied to a p-n junction diode, the following processes occur:
**1. Formation of the depletion region:**
- Initially, the p-n junction diode is in the unbiased state, where there is no external voltage applied.
- In this state, the p-side is positively charged due to the presence of holes (positive charge carriers), and the n-side is negatively charged due to the presence of electrons (negative charge carriers).
- The diffusion of charge carriers across the junction creates a region called the depletion region, which lacks any free charge carriers.
**2. Forward biasing:**
- When a positive voltage is applied to the p-side of the diode and a negative voltage is applied to the n-side, the diode is said to be forward biased.
- This forward bias reduces the width of the depletion region, allowing free charge carriers to move across the junction.
**3. Electron flow:**
- In a forward biased p-n junction diode, the positive terminal of the battery is connected to the p-side (anode) of the diode.
- The positive terminal attracts the negatively charged electrons from the n-side of the diode.
- These electrons move through the external circuit, creating a current flow.
**4. Hole flow:**
- As the electrons move from the n-side to the p-side, they leave behind positively charged holes in the n-side.
- These holes are attracted by the positive terminal of the battery and move towards it.
- The movement of holes through the p-side constitutes a flow of positive charges, creating a current flow in the opposite direction.
Therefore, in a forward biased p-n junction diode, the positive terminal of the battery sucks electrons from the p-region (anode). This is because the positive terminal attracts the negatively charged electrons, allowing them to flow through the external circuit.
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Which of the following is true in case of a forward biased p-n junction diode?a)The positive terminal of the battery sucks electrons from the p-regionb)The positive terminal of the battery injects electrons into the p-regionc)The negative terminal of the battery sucks electrons from the p-regiond)None of the above mentioned statements are trueCorrect answer is option 'A'. Can you explain this answer?
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Which of the following is true in case of a forward biased p-n junction diode?a)The positive terminal of the battery sucks electrons from the p-regionb)The positive terminal of the battery injects electrons into the p-regionc)The negative terminal of the battery sucks electrons from the p-regiond)None of the above mentioned statements are trueCorrect answer is option 'A'. 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 Which of the following is true in case of a forward biased p-n junction diode?a)The positive terminal of the battery sucks electrons from the p-regionb)The positive terminal of the battery injects electrons into the p-regionc)The negative terminal of the battery sucks electrons from the p-regiond)None of the above mentioned statements are trueCorrect answer is option 'A'. 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 Which of the following is true in case of a forward biased p-n junction diode?a)The positive terminal of the battery sucks electrons from the p-regionb)The positive terminal of the battery injects electrons into the p-regionc)The negative terminal of the battery sucks electrons from the p-regiond)None of the above mentioned statements are trueCorrect answer is option 'A'. Can you explain this answer?.
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