Electricity
1 Board Physics previous year questions on Electricity — options free on every question; 1 include the answer & explanation free, the rest unlock with PYQ Pass.
Q1 FREE PREVIEW
Earth wire is used in the electric instruments as:
[PYQ 2024]
✓ Correct answer: b)
Safety measure
Explanation
An earth wire is used as a safety measure in electrical instruments to protect users from electric shock. It connects the metal casing of an appliance to the ground, providing a low-resistance path for excess current to flow to the earth in case of a fault, such as a live wire touching the casing. This prevents the appliance's metal body from becoming live and causing a shock if a person touches it.
Practice more Board Physics PYQs
Browse every Physics chapter, or explore the full Board question bank.
🧲 All Physics chapters →