Short answer·Routine exam skill (2/5)·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
The figure shows the I-V characteristic of a p-n junction diode.
Total: 3 marks
(a) Which side of the graph represents forward bias? (1 mark)
(b) Which side represents reverse bias? (1 mark)
(c) State one difference between currents in the two regions. (1 mark)
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