Q 12-01-049JEE MainJEE Main 2024 (5 Apr, Shift 2)Easy
Vehicles carrying inflammable fluids usually have metallic chains touching the ground
Answer: (D) to conduct excess charge due to air friction to the ground and prevent sparking
Friction with air charges the body of the vehicle. The metal chain conducts this charge to the earth, so no charge builds up to cause a spark near the inflammable fluid.
Solution by Sreeraj P, M.Sc Physics