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← ScienceWhich consequence results when an air-gap capacitor's plate vibrates?
A)Amplitude modulation in the current✓
B)Reduced charge storage within plates
C)Dielectric breakdown due to harmonics
D)Increased plate thermal expansion rate
💡 Explanation
Amplitude modulation arises because varying plate separation modulates capacitance; as capacitance changes sinusoidally due to oscillation of the separation, the current also varies because of the capacitance changes. Therefore, the current amplitude is modulated rather than the charge, breakdown, or thermal effects related to high frequencies.
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