Static Charge in Vehicles – Rankers Physics
Topic: Electrostatics
Subtopic: Properties of Charges

Static Charge in Vehicles

Assertion (A): Vehicles carrying highly inflammable materials have hanging chains, slightly touching the ground.
Reason (R): The body of a vehicle gets charged when moving through air at high speed.
 
Both (A) & (R) are true and the (R) is the correct explanation of the (A)
Both (A) & (R) are true but the (R) is not the correct explanation of the (A)
(A) is true but (R) is false
Both (A) and (R) are false

Solution:

Assertion (A) is true: These chains are a safety measure to discharge static electricity. Reason (R) is true: Friction between the vehicle's body and air (or tires and road) generates static charge.

(R) correctly explains (A) as the chains provide a path to ground, preventing dangerous sparks from static charge buildup.

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