π²³ ∞ ° → ~ µ ρ σ τ ω ∑ … √ ∫ ≤ ≥ ± ∃ · θ φ ψ Ω α β γ δ ∂ ∆ ∇ ε λ Λ Γ ô(adsbygoogle = window.adsbygoogle || []).push({});

1. The problem statement, all variables and given/known data

An arbitrarily long hallow cylindrical electric conductor shown carries a static electric current density J=[tex]\hat{z}[/tex]J_{0}. Determine the magnetic flux density B in the hallow region of radius a. Your result should show that B is constant in this region.

2. Relevant equations

∫B.dl = µ_{0}I

3. The attempt at a solution

current I = [tex]\hat{z}[/tex]J_{0}pi(b^{2}-a^{2})

B. 2pia = µ_{0}[tex]\hat{z}[/tex]J_{0}pi(b^{2}-a^{2})

B = µ_{0}[tex]\hat{z}[/tex]J_{0}(b^{2}-a^{2}) /2a

I am not sure about B.dl being B.2pi a

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# Homework Help: Magnetic flux density

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