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Saitama
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Homework Statement
Find the magnitude and direction of the magnetic induction vector ##\textbf{B}## of an infinite plane carrying a current of linear density ##\textbf{i}##; the vector ##\textbf{i}## is same at all points of the plane.
Homework Equations
The Attempt at a Solution
I can do this with integration but I have seen the same question solved before. The solution was done using Ampere's circuital law. I seem to have forgotten the way it was solved. How can I do this using Ampere's circuital law. I don't even have the slightest idea about what shape should be the amperian loop.
If we divide the plane into thin infinite current carrying wire and consider wires at equal distances from the symmetrical axis, it can be deduced from symmetry that the direction of magnetic field is downwards towards the plane.
Thanks!
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