1. The problem statement, all variables and given/known data 2. Relevant equations Ienclosed = ∫ JdA ∫B*ds = m0*I 3. The attempt at a solution This is my take of finding when r is greater than R--so, the magnetic field is m0*I/2pir, since B(2pir) = m0*I This is because the amperian circle covers the whole wire. Can somebody verify that this is correct? (when r>R) I mean it doesnt matter that the density is nonunfirom correct?