A cylindrical conductor has a magnetic eld given by H = 073 A /m Here, C is a constant, and C = 21. Use the differential form of Ampere's law to nd the current density J, and then use this to calculate the current through the conductor's cross-sectional area given by 0 S r S 0.5, 0 S (p 5 7r, 2 = 0 mm. What is the current I? (write your answer to 2 decimal places)