An infinitely long hollow conducting cylinder with inner radius R /2 and outer radius R…
Physics · JEE Advanced · NTA Exams — Magnetic Effects of Current and Magnetism
An infinitely long hollow conducting cylinder with inner radius R/2 and outer radius R carries a uniform current density along its length. The magnitude of the magnetic field, 
as a function of the radial distance r from the axis is best represented by
as a function of the radial distance r from the axis is best represented by
Answer
(C)
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