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← ScienceWhich mechanism prevents power dissipation in superconducting magnets?
A)Meissner effect expelling magnetic fields✓
B)Thermionic emission reducing resistance
C)Joule heating maintaining critical temperature
D)Eddy current cancellation diminishing losses
💡 Explanation
The Meissner effect repels magnetic fields, establishing stable supercurrents that bypass Ohmic resistance; therefore energy dissipation is negated, rather than minimized by thermionic emission, because heating would break superconductivity.
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