Electrical Safety in Mains Plugs Steps:

• The live wire supplies dangerous voltage to the lamp, so components must interrupt it for safety.
• The switch disconnects power when off, preventing shock by isolating the live wire.
• The fuse protects against overloads by breaking the live circuit if current exceeds safe levels.
• Both must connect to the live wire to fully de-energize the lamp.

Why C is correct:

• Live wire interruption by both switch and fuse follows electrical safety standards, ensuring no voltage reaches the lamp when off or during faults.

Why the others are wrong:

• A: Fuse on neutral fails to isolate live voltage, leaving the lamp potentially energized after fuse blow.
• B: Switch on neutral keeps live connected when off, risking electric shock.
• D: Neither interrupts live wire, so lamp remains hazardous at all times.

Final answer: C