Exam-style question
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EC70: For Discrete semiconductor devices, a student is analysing a sample-and-hold stage. Which option gives the best Photodiode reasoning for the objective "Explain how light intensity affects photocurrent"?.
- A.EC70 correct: In the sample-and-hold stage, the answer follows the signal path from input condition to component response to output change, so it supports Explain how light intensity affects photocurrent.
- B.EC70 distractor: It names a component but does not connect the input condition to the measured output in Photodiode.
- C.EC70 distractor: It reverses the cause-and-effect chain, so the output is explained before the circuit condition is set.
- D.EC70 distractor: It gives a generic electronics definition without applying the sample-and-hold stage context.
Model answer
What a good answer should say
- The correct option is EC70 correct: In the sample-and-hold stage, the answer follows the signal path from input condition to component response to output change, so it supports Explain how light intensity affects photocurrent.
Explanation
Why this works
It is best because it keeps Photodiode anchored to the circuit signal path: input condition, component response, then output change. The distractors are wrong because they omit the output link, reverse the electronics causality, or drift into a generic component definition rather than applying the sample-and-hold stage.
Common mistake
No common mistake is linked to this question yet.