Capacitors? PLS help me! Appreciate it!?

" Ever-increasing amount of charges would lead to ever-increasing potential difference between two plates. If the capacitor’s working voltage is exceeded, or the strength of the ever-increasing electric field is more than what the dielectric can withstand, the capacitor is most likely to be spoiled. " ... show more " Ever-increasing amount of charges would lead to ever-increasing potential difference between two plates. If the capacitor’s working voltage is exceeded, or the strength of the ever-increasing electric field is more than what the dielectric can withstand, the capacitor is most likely to be spoiled. " So how do we know when the amount of charges and the voltage is exceeded? And how do we protect capacitors from this?
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