JEE Main 2025 · PhysicsMultiple choiceSingle correctMediumMulti-step

JEE Main 2 April 2025, Shift 2, Physics Q27

Question 27 of 75 in this shift, Physics question 2 of 25, Section A.

Given a charge

q

, current

I

and permeability of vacuum

\mu_0

. Which of the following quantity has the dimension of momentum ?

(1) $q\mu_0 / I$
(2) $q^2\mu_0 I$
(3) $qI/\mu_0$
(4) $q\mu_0 I$ Official answer

Official answer

Option 4

NTA final key.

Chapter: Units and Measurements
Topic: Biot-Savart Law
Idea tested: Dimensions of Permeability

Same topic in other shifts

All Biot-Savart Law questions

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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.