Niobium metal becomes a superconductor (with electrical resistance equal to zero) when cooled below 9 K.If superconductivity is destroyed when the surface magnetic field exceeds 0.100 T,determine the maximum current a 2.00-mm diameter niobium wire can carry and remain superconducting.(µ0 = 4π × 10−7 T⋅m/A)
A) 2000 A
B) 1000 A
C) 125 A
D) 500 A
Correct Answer:
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