Long answer·Hard exam skill (4/5)·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 safety features of a domestic electric circuit using live, neutral, earth wire, fuse and parallel connection.
Total: 6 marks
(a) Describe the function of live and neutral wires. (2 marks)
(b) Explain the role of earth wire and fuse. (2 marks)
(c) Explain why appliances are connected in parallel. (2 marks)
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