Exam-style question
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Explain the I-V characteristic of a diode, including how it behaves in forward and reverse bias.
Model answer
What a good answer should say
- In forward bias, a diode allows current to flow easily once the threshold voltage is exceeded, resulting in a steep rise in current.
- In reverse bias, the diode blocks current flow until breakdown occurs, showing a very small reverse current.
Explanation
Why this works
This answer demonstrates understanding of diode behavior under different biases, testing knowledge of current-voltage characteristics. It highlights the distinct operational modes of diodes, which is crucial for understanding semiconductor devices.
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