Correct AnswerB. Provide a safe path for leakage/fault current to flow
Quick Explanation
Equipment earthing provides a low-impedance path for leakage/fault current from exposed conductive parts to earth/protective conductor so protective devices can operate rapidly and dangerous touch voltage is reduced.
Detailed Explanation
Concept & Reasoning
If insulation fails and a live conductor contacts a metal enclosure, an unearthed enclosure can remain at dangerous voltage. A proper protective earth creates a fault loop with sufficient current to operate a fuse/MCB/RCD as applicable, while bonding keeps accessible conductive parts close to earth potential.
How to Solve It in the Exam
Earthing is about safety and fault-current return path.
Important Exam PointProtective earthing does not intentionally carry normal load current.
Related Revision Path
This question sits in the revision path Electrical Laws, Standards and Energy Policy → Earthing and Safety → Protective Earthing .
