Answered: If superconductivity is destroyed when…

If superconductivity is destroyed when the surface magnetic field exceeds 0.15 T, determine the maximum current a 3.2 mm diameter niobium wire can carry and remain superconducting.

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter11: Magnetic Forces And Fields

Section: Chapter Questions

Problem 63AP: An electron of kinetic energy 2000 eV passes between parallel plates that are 1.0 an apart and kept...

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Concept explainers

Magnetic Force

A magnetic force arises when a charged particle or a current-carrying conductor is placed in a magnetic field. It is created because of the movement of the charged particles.

Question

Niobium metal becomes a superconductor
(with zero electrical resistance) when cooled
below 8.3 K.
The permeabilty of free space is 1.25664 ×
10−6 N/A
2
.
If superconductivity is destroyed when the
surface magnetic field exceeds 0.15 T, determine the maximum current a 3.2 mm diameter niobium wire can carry and remain superconducting.
Answer in units of A.

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