From Ampere's circuital law for a long straight wire of circular cross-section carrying a…

Physics · NEET · NTA Exams — Magnetic Effects of Current and Magnetism

1. A linearly increasing function of distance r upto the boundary of the wire and then decreasing one with \(\frac{1}{r}\) dependence for the outside region
2. A linearly decreasing function of distance upto the boundary of the wire and then a linearly increasing one of the outside region
3. Uniform and remains constant for both the regions
4. A linearly increasing function of distance upto the boundary of the wire and then linearly decreasing for the outside region

Answer

(A) A linearly increasing function of distance r upto the boundary of the wire and then decreasing one with 1 r dependence for the outside region

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