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Which material weakness increases when a tokamak's magnets quench?

A)Neutron activation of the vacuum vessel
B)Electromagnetic stress from current disruption
C)Helium embrittlement from alpha particles
D)Tritium diffusion into the coolant system

💡 Explanation

When a tokamak magnet quenches during deuterium-tritium fusion, runaway current forms in the plasma. This event causes intense electromagnetic stress on the vessel because the rapid current change induces strong forces, therefore electromagnetic stress increases, rather than neutron- or alpha-related effects.

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