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← ScienceWhich outcome occurs when a ship's radio antenna passes through intense electromagnetic fields?
A)Increased antenna thermal noise floor✓
B)Enhanced Faraday cage effectiveness
C)Suppressed atmospheric static discharge
D)Reduced resonant bandwidth of antenna
💡 Explanation
Induced currents from strong electromagnetic fields causes increased thermal agitation of the antenna's electrons called Johnson-Nyquist noise. It adds unwanted signals, because the mechanism increases random electron movement rather than enhancing reception, therefore it will increase the noise floor.
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