Vehicles carrying inflammable materials usually have metallic ropes touching the ground during motion in order to
control the speed of the vehicle
conduct the charge produced by friction
conduct the current produced by inflammable material
provide earthing for lightning
Answer is Right!
Answer is Wrong!
This question was previously asked in
UPSC CAPF – 2011
Vehicles carrying inflammable materials can build up static electric charge due to the friction between the vehicle’s tyres and the road, the movement of the liquid/gas within the tank, or friction with air. This static charge can accumulate on the vehicle body. The metallic rope touching the ground provides a path for this charge to be safely conducted away into the earth, preventing the build-up of static electricity and eliminating the risk of a spark that could ignite the inflammable material.