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← ScienceWhich limitation arises when a SQUID magnetometer approaches saturation?
A)Reduced precision field measurement✓
B)Increased Johnson noise coupling
C)Quantum entanglement decoherence
D)Flux pinning destabilizes screening
💡 Explanation
The SQUID's sensitivity decreases near magnetic saturation, because exceeding the critical current leads to flux jumping, which limits the device's ability to precisely measure the external field. Therefore, precision declines, rather than increased noise dominating operation.
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