π²³ ∞ ° → ~ µ ρ σ τ ω ∑ … √ ∫ ≤ ≥ ± ∃ · θ φ ψ Ω α β γ δ ∂ ∆ ∇ ε λ Λ Γ ô 1. The problem statement, all variables and given/known data Derive the vector potential A produced by an infinite straight wire of negligible thickness, located in free space and carrying a static electric current I. 2. Relevant equations 3. The attempt at a solution I tried to start with the expression for Mag flux density B= µH ∇xH = jωD+J (ampere's law). I substituted H=B/µ and couldn't proceed any further.