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← ScienceWhich outcome occurs when a superconducting SQUID's applied field exceeds its critical field?
A)Device transition to normal conductivity✓
B)Flux quantization remains unaffected
C)Josephson junctions maintain superconductivity
D)SQUID amplifier remains fully linear
💡 Explanation
The device transitions to normal conductivity because magnetic fields penetrate the superconducting ring via **Abrikosov vortices**, therefore destroying the zero-resistance state, rather than flux behaviour or quantum mechanical effects being unaffected under these constraints.
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