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From Amperes circuital law for a long straight wire of circular crosssection carrying a steady current, the variation of the magnetic field in the inside and outside region of the wire is
(1) Uniform and remains constant for both the regions.
(2) A linearly increasing function of distance up to the boundary of the wire and then linearly decreasing for the outside region.
(3) A linearly increasing function of distance r up to the boundary of the wire and then decreasing one with 1/r dependence for the outside region.
(4) A linearly decreasing function of distance up to the boundary of the wire and then a linearly increasing
one for the outside region.  

Question. From Amperes circuital law for a long straight wire of circular crosssection carrying a steady current, the variation of the magnetic field in the inside and outside region of the wire is

(1) Uniform and remains constant for both the regions.

(2) A linearly increasing function of distance up to the boundary of the wire and then linearly decreasing for the outside region.

(3) A linearly increasing function of distance r up to the boundary of the wire and then decreasing one with 1/r dependence for the outside region.

(4) A linearly decreasing function of distance up to the boundary of the wire and then a linearly increasing one for the outside region.                                                                                                                                                                                                 (NEET-2022)

Aditya Bhatt Answered question 13 February 2024
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