An infinitely long filamentary wire carries a current of 2 A in the +z direction. Calculate (a) B at (-3, 4, 7) (b) The flux through the square loop described by 2p≤ 6,0 sz≤4, = 90° -1 The magnetic field H = (10%/p) cos o a, A/m exists in free space. Find the flux through the surface described by p = 1 m, 0 ≤π/2, 0 ≤ Z ≤2 m.