JEE Main 2025 · PhysicsMultiple choiceSingle correctEasyCalculation

JEE Main 3 April 2025, Shift 2, Physics Q36

Question 36 of 75 in this shift, Physics question 11 of 25, Section A.

A magnetic dipole experiences a torque of

80\sqrt{3}

N m when placed in uniform magnetic field in such a way that dipole moment makes angle of

60^\circ

with magnetic field. The potential energy of the dipole is :

(1)80 J
(2) $-$ 80 JOfficial answer
(3) $-40\sqrt{3}$ J
(4) $-$ 60 J

Official answer

Option 2

NTA final key.

Chapter: Magnetism and Matter
Topic: Magnetic Dipole Moment
Idea tested: Potential energy in a magnetic field

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