The figure below shows a long conducting coaxial cable and gives its radii (R₁ = 2.5cm, R₂=8.3cm, R3-15.2cm). The inner cable has a uniform current density of J = 1.2 A/m²,

and the outer cable carries a uniform current I = 3.4A flowing in opposite direction. Assume that the currents in each wire is uniformly distributed over its cross section. Determine the magnitude of the magnetic field in terms of Ho at a distance r = 20.3cm from the center of the cable. Express your answer using two decimal places. R R2 R3 Answer: I