Exam-style question
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Describe how light intensity affects the photocurrent in a photodiode.
Model answer
What a good answer should say
- As light intensity increases, more photons strike the photodiode, resulting in a greater number of electron-hole pairs being generated.
- This leads to an increase in the photocurrent, which is directly proportional to the light intensity.
Explanation
Why this works
This answer effectively links the concepts of light intensity and photocurrent, demonstrating the student's ability to analyze the relationship between these two variables in the context of photodiode operation. It tests their understanding of how photodiodes function in sensing applications.
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