everyday science MCQ #50169

Grounding household appliances mainly reduces which risk when insulation fails?

everyday science MCQ #50169

  1. Question 1

    Q1. Grounding household appliances mainly reduces which risk when insulation fails?

    • A) Air pressure shocks
    • B) Risk of dangerous shock if live parts touch the case
    • C) Loss of gravity in wires
    • D) Permanent increase in resistance to infinity in all wires

    Answer: Risk of dangerous shock if live parts touch the case

    Explanation: Grounding (earthing) provides a low-resistance path to the earth so that if a live wire contacts the metal casing of an appliance, fault current flows to earth rather than through a person, triggering the fuse or circuit breaker. Without grounding, touching the casing could deliver a fatal shock.