Given : \\mu_r = 400 i = 2 A n = 1000 turns per meter(a) H = ni = 1000\ imes 2 = 2000 A/m (b) B = \\mu_o H = 4\\pi\ imes 10^{-7}\ imes 2000 = 8\\pi\ imes 10^{-4} \\ T (c) I_m = \\chi H = 399\ imes 8\\pi\ imes 10^{-4} = 10 \\ A/m