Which mechanism causes arcing within a power capacitor?

💡 Explanation

Dielectric breakdown initiates arcing across capacitor plates due to an intense electric field exceeding the material's insulating capacity, inducing cascading ionization. This leads to rapid current increase forming an arc, rather than other losses which gradually degrade components because they don't sharply reduce insulation.

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• Which mechanism causes arcing across electrodes when voltage exceeds dielectric strength between them?
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