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Engineering Physics by S. Mani Naidu

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9.5 Flux quantization

We know that electric charge is quantized in terms of integral multiples of charge on an electron [1.6 × 10 –19 C]. Similarly, the magnetic flux lines passing through a superconducting loop due to persistent current is quantized in terms of integral multiples of images Flux quantization can be proved with the help of a superconducting material in the form of a hollow cylinder or ring.

 

Figure 9.12 Sample cooled in the presence of magnetic field

images

 

Magnetic field is applied on the superconducting ring in normal state as shown in ...

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