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Physics · Motion in Plane

JEE Main 2026 — 28 January, Evening Shift — Question 39

A long cylindrical conductor with large cross section carries an electric current distributed uniformly over its cross-section. Magnetic field due to this current is :

A. maximum at either ends of the conductor and minimum at the midpoint

B. maximum at the axis of the conductor

C. minimum at the surface of the conductor D. minimum at the axis of the conductor

E. same at all points in the cross-section of the conductor

Choose the correct answer from the options given below :

  1. Option A:

    D Only

    Correct
  2. Option B:

    A, D Only

  3. Option C:

    B, C Only

  4. Option D:

    E Only

Answer: A

Step-by-step solution

Solid cylinder Bmax \mathrm{B}_{\text {max }} at surface Bmin \mathrm{B}_{\text {min }} at Axis

Solution figure

Answer key and solution verified before publishing.

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Exam
JEE Main 2026
Paper
28 January, Evening Shift
Subject
Physics
Chapter
Motion in Plane
Topic
Oblique and Horizontal Projectile Motion
A long cylindrical conductor with large cross section carries an… | JEE Main 2026 PYQ with Solution · DhiX AI