JEE Main 2024 · PhysicsMultiple choiceSingle correctEasyConceptual

JEE Main 5 April 2024, Shift 1, Physics Q43

Question 43 of 90 in this shift, Physics question 13 of 30, Section A.

In a co-axial straight cable, the central conductor and the outer conductor carry equal currents in opposite directions. The magnetic field is zero :

(1)outside the cableOfficial answer
(2)inside the inner conductor
(3)inside the outer conductor
(4)in between the two conductors

Official answer

Option 1

Chapter: Moving Charges and Magnetism
Topic: Ampere's Circuital Law
Idea tested: Coaxial Cable Magnetic Fields

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