The minimum intensity of the magnetic induction (Bo) necessary to confine a plasma at an interval pressure of 100 atm is 5 Weber/m^2 . Assuming that this field is produced by as axial current flowing in a cylindrical plasma column of radius 20 cm, show that (using Ampere's Law) that the total current necessary to produce this magnetic field at the column surface is 2.5 × 10^6 A. (1atm = 10^5 N/m^2, mu not = 4×10^-7 henr)/m).