An electric iron is connected to the household supply through a three-pin plug and an…
PHYSICS · Subjective · CBSE · Physics · Magnetic Effects of Electric Current · Magnetic Effects of Electric Current
Problem
An electric iron is connected to the household supply through a three-pin plug and an individual switch.
(i) A short-circuit occurs inside the iron causing the fuse in its plug to blow, yet all other appliances in the house continue to work normally. Explain why.
(ii) State two reasons for placing the fuse in the live wire rather than in the neutral wire.
(iii) Describe how the earth wire protects the user if the metal body of the iron accidentally becomes live.