Current Electricity: Earthing MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

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EarthingMediumQuestion 31659

Question

In a house electrical circuit, the earth wire's primary purpose is:

A
Carry main current
B
Provide path for leakage current to earth, protecting from shock
Correct
C
Increase voltage
D
Reduce resistance

Correct answer

Provide path for leakage current to earth, protecting from shock

Explanation

The earth (ground) wire connects metal parts of appliances to earth potential. If a fault causes a live conductor to touch the casing, current flows safely to earth (and trips the fuse/MCB) rather than through a person.

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