JEE Main 2024 · PhysicsMultiple choiceSingle correctEasyConceptual

JEE Main 5 April 2024, Shift 2, Physics Q40

Question 40 of 90 in this shift, Physics question 10 of 30, Section A.

The vehicles carrying inflammable fluids usually have metallic chains touching the ground :

(1)To protect tyres from catching dirt from ground
(2)To alert other vehicles
(3)To conduct excess charge due to air friction to ground and prevent sparkingOfficial answer
(4)It is a custom

Official answer

Option 3

NTA final key.

Chapter: Electrostatic Potential and Capacitance
Topic: Conductors in Fields
Idea tested: Earthing of Conductors

Same topic in other shifts

All Conductors in Fields questions

2 Apr 2026, Shift 1 · Q34Two charged conducting spheres $S_1$ and $S_2$ of radii $8$ cm and $18$ cm are connected to each other by a wire. After equilibrium is…EasySingle correct
4 Apr 2026, Shift 2 · Q38Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A: In electrostatics, a…MediumAssertion–reason
7 Apr 2025, Shift 2 · Q38Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : The outer body…EasyAssertion–reason
8 Apr 2025, Shift 2 · Q37Electric charge is transferred to an irregular metallic disk as shown in figure. If $\sigma_1$ , $\sigma_2$ , $\sigma_3$ and $\sigma_4$ are…EasyOtherHas a figure
8 Apr 2025, Shift 2 · Q38Two metal spheres of radius R and 3R have same surface charge density $\sigma$ . If they are brought in contact and then separated, the…EasySingle correct
8 Apr 2024, Shift 1 · Q45Two charged conducting spheres of radii $a$ and $b$ are connected to each other by a conducting wire. The ratio of charges of the two…EasySingle correct

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.