Exam-style question
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Explain how light intensity affects the photocurrent in a photodiode.
Model answer
What a good answer should say
- As light intensity increases, the photocurrent in a photodiode also increases.
- This is because more photons striking the photodiode generate more electron-hole pairs, leading to a higher flow of current.
Explanation
Why this works
This answer is strong because it directly addresses the relationship between light intensity and photocurrent, demonstrating an understanding of the underlying physics principles. The question tests the student's ability to connect the concept of light intensity with the operational behavior of a photodiode.
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