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PHY-2022-CR6-042
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PHY · PHY-2022-CR6-042
Physics
Section B
From Ampere’s circuital law for a long straight wire of circular cross-section carrying a steady current, the variation of magnetic field in the inside and outside region of the wire is
A
A linearly decreasing function of distance upto the boundary of the wire and then a linearly increasing one for the outside region.
B
Uniform and remains constant for both the regions.
C
A linearly increasing function of distance upto the boundary of the wire and then linearly decreasing for the outside region.
D
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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