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, ∣ B ∣ as a function of

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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, ∣ B ∣ as a function of the radial distance r from the axis is best represented by

TestHub · Accepted Answer

For r < 2 R ​ , B = 0 For 2 R ​ ≤ r < R , B = 2 μ 0 ​ ​ [ r − 2 r R 2 ​ ] J ​ For r > R , B = 2 π r μ 0 ​ i ​ i.e., B ∝ r 1 ​ ​ Hence graph ( d ) correctly depicts ∣ B ∣ versus r graph.

Physics - Magnetism Question with Solution | TestHub

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