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Constants Part A Consider an infinite sheet of parallel wires. The sheet lies in the xy plane. A current I runs in the -y direction through each wire. There are N/a wires per unit length in the x direction. (Figure 1) Write an expression for Ed), the magnetic field a distance d above the xy plane of the sheet. Use po for the permeability of free space Express the magnetic field as a vector in terms of any or all of the following: d, 1, A, a, μ0, and the unit vectors , 3, and/or k. View Available Hint(s) fempBes Symbols Lado redo rest keyboard shortcuts help Submit Provide Feedback Next > Figure 1 of 1

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Solution,

From Amperes law, the magnetic field is, B(2a)-(NI) 2a In vector notation, magnetic field is, B (d)- Here, negative sign indicates that the magnetic field is directed in negative x axis. 2a

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