The element niobium, which is a metal, is a superconductor (i.e., no electrical resistance) at temperatures below 9 K. However, the superconductivity is destroyed it the magnetic field at the surface of the metal reaches or exceeds 0.10 T. V PartA What is the maximum current in a straight, 2.20-mm-diameter superconducting niobium wire? Express your answer with the appropriate units. m Quest