A thick current cable of radius R carries current ‘I' uniformly distributed across its cross section. The variation of magnetic field B(r) due to the cable with the distance ‘r’ from the axis of the cable is represented by :
[Diagram: Four graphs showing B vs r, with different curve shapes]

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Accepted Answer

[Graph showing B increasing linearly with r inside, then decreasing as 1/r outside]

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A thick current cable of radius R carries current ‘I' uniformly distributed across its cross section. The variation of magnetic field B(r) due to the cable with the distance ‘r’ from the axis of the cable is represented by : [Diagram: Four graphs showing B vs r, with different curve shapes]

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