2011 · Q73
Vehicles carrying inflammable materials usually have metallic ropes touching the ground during motion in order to
general-sciencephysics-electricity
- Acontrol the speed of the vehicle
- Bconduct the charge produced by friction
- Cconduct the current produced by inflammable material
- Dprovide earthing for lightning
Explanation
The metallic ropes/chains provide earthing, conducting away static charge built up by friction during motion.