Question

) In practice, the superconducting ring can be considered with a finite resistance and inductance. Assume...

) In practice, the superconducting ring can be considered with a finite resistance and inductance. Assume a superconducting ring (with r = 5 cm and thickness of wire 2d = 1mm) is held within an external magnetic field B before it is cooled below its transition temperature. Once the superconductor is cooled the external magnetic field is removed, but the screening currents will continue to flow in the superconducting ring. The current in the ring decreases 1 percent within an hour. Assume that the stored energy is lost in the resistance of the ring, estimate the magnitude of resistance of the ring.

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