Two semi-infinite filaments on the z axis lie in the regions < z < a

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Two semi-infinite filaments on the z axis lie in the regions − ∞ < z < −a and a < z < ∞. Each carries a current I in the az direction.

(a) Calculate H as a function of ρ and ϕ at z = 0.

(b) What value of a will cause the magnitude of H at ρ = 1, z = 0, to be one-half the value obtained for an infinite filament?

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Engineering Electromagnetics

ISBN: 978-0073380667

8th edition

Authors: William H. Hayt, John A.Buck

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