Exam-style question
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What happens to the current through a diode when it is reverse-biased?.
- A.Current increases significantly
- B.Current remains at zero
- C.Current decreases to a negative value
- D.Current fluctuates rapidly
Model answer
What a good answer should say
- Current remains at zero
Explanation
Why this works
When a diode is reverse-biased, it blocks current flow, resulting in a very small leakage current that is typically negligible, effectively keeping the current at zero.
Common mistake
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