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
A transformer activity uses turns and turns. The primary is connected to AC.
Total: 3 marks
(a) Find the expected secondary voltage for an ideal transformer. (1 mark)
(b) Name the type of transformer. (1 mark)
(c) State why the input should be AC and not DC. (1 mark)
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