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Questions and Answers
What type of junction is formed in a P n junction diode?
What type of junction is formed in a P n junction diode?
- Cation and anion junction
- P-type and n-type semiconductor junction (correct)
- Conductive and non-conductive junction
- Positive and negative charge junction
What happens to the P n junction diode in forward bias?
What happens to the P n junction diode in forward bias?
- It becomes non-conductive
- It blocks current flow
- It increases resistance
- It allows current to flow (correct)
What is the role of the depletion region in a P n junction diode?
What is the role of the depletion region in a P n junction diode?
- To act as a resistor
- To allow unrestricted current flow
- To increase the capacitance
- To create a potential barrier (correct)
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Study Notes
P-N Junction Diode
- A P-N junction diode is formed by combining two types of semiconductor materials, p-type (positive) and n-type (negative), creating a junction.
Characteristics
- Forward bias occurs when the positive terminal of the battery is connected to the p-type material and the negative terminal is connected to the n-type material.
- In forward bias, the depletion region is reduced, and the diode becomes less resistive, allowing current to flow.
Depletion Region
- The depletion region is a narrow region at the P-N junction where the electrons and holes combine, leaving no charge carriers.
- The role of the depletion region is to act as a barrier to the flow of charge carriers, controlling the flow of current.
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