A thin copper rod of 1.00 m long consists of a mass of 50.0 g. Determine the minimum current in the rod which would allow it to levitate above the ground in a magnetic field of magnitude of 0.100 T?
i) 1.20 A
ii) 2.40 A
iii) 4.90 A
iv) 9.80 A
v) None of the above