JEE Main 2025 · PhysicsMultiple choiceSingle correctMediumApplication

JEE Main 2 April 2025, Shift 2, Physics Q44

Question 44 of 75 in this shift, Physics question 19 of 25, Section A.

Consider a circular loop that is uniformly charged and has a radius

a\sqrt{2}

. Find the position along the positive

z

-axis of the cartesian coordinate system where the electric field is maximum if the ring was assumed to be placed in

xy

plane at the origin :

(1) $a/\sqrt{2}$
(2) $a/2$
(3) $a$ Official answer
(4) $0$

Official answer

Option 3

NTA final key.

Chapter: Electric Charges and Fields
Topic: Electric Field
Idea tested: Maximum Axial Field of a Ring

Same topic in other shifts

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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 42 of the 174 JEE Main shifts held from 2017 to 2026.