Exam-style question
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Describe the operation of a photodiode when exposed to light.
Model answer
What a good answer should say
- A photodiode operates by converting light energy into electrical energy.
- When light photons hit the photodiode, they generate electron-hole pairs, allowing current to flow when the diode is reverse-biased.
Explanation
Why this works
This answer effectively summarizes the operational principle of a photodiode, highlighting the conversion of light to electrical energy. The question assesses the student's grasp of the fundamental function of photodiodes in electronic circuits.
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