Niobium Metal Becomes a Superconductor (With Electrical Resistance Equal to Zero)

question 66

Multiple Choice

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 = 4 $\pi$ *10^-7 T.m/A)

• A) 2000 A
• B) 1000 A
• C) 125 A
• D) 500 A

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Max Weber

A German sociologist, economist, and political scientist known for his ideas on social theory and the study of society, particularly regarding bureaucracy, the religion and economy connection, and social stratification.

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