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Author Question: Niobium metal becomes a superconductor (with electrical resistance equal to zero) when cooled below ... (Read 74 times)

joe

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on: Jul 28, 2018
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. (0 = 4p  10-7 Tm/A)
 a. 2000 A
  c. 125 A
  b. 1000 A
  d. 500 A

Question 2

The SI base units for the spring constant are which of the following?
 a. kgs2
  c. kg/s2
  b. kg/m2
  d. kgm2


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skipfourms123

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Reply #1 on: Jul 28, 2018
Answer to Question 1

D

Answer to Question 2

C


joe

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Reply #2 on: Jul 28, 2018
Thanks


skipfourms123

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Reply #3 on: Jul 28, 2018
Welcome :)


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