Long answer·Standard multi-step (3/5)·No calculator
Difficulty guide
The label describes the problem, not your ability.
1/5 - Foundational
Warm-up setup; checks one basic idea.
2/5 - Routine exam skill
Normal syllabus skill; usually one main rule or interpretation.
3/5 - Standard multi-step
Exam-style problem with multiple steps or a common trap.
4/5 - Hard exam skill
High-end exam problem; combines methods carefully.
5/5 - Challenge
Stretch problem beyond normal exam pressure.
Question
Compare the behaviour of a p-n junction diode in forward bias and reverse bias.
Total: 5 marks
(a) State the terminal connection for forward bias. (1 mark)
(b) State the terminal connection for reverse bias. (1 mark)
(c) Compare the depletion layer in the two cases. (2 marks)
(d) Compare the current in the two cases. (1 mark)
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