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
Explain the construction and working principle of a simple AC generator. State why the emf produced is alternating.
Total: 6 marks
(a) Name the main parts shown in a simple AC generator. (2 marks)
(b) Explain how emf is induced. (2 marks)
(c) Explain why the emf changes direction periodically. (2 marks)
Something wrong with this item?