# Maximum charge of a capacitor

Suppose we have a capacitor charged with charge $$Q1$$

Then an electron beam hits the positive plate of the capacitor, thus increasing the charge of the capacitor (the battery will begin to deposit the electrons on the blue plate, thus increasing the charge such that $$Q2> Q1$$)

My question is, what is the maximum charge that a capacitor can support before it breaks?

• Why do you think the maximum charge achievable this way would be different from the maximum from just connecting a variable voltage source? – The Photon Aug 2 '20 at 15:52

The dielectric material can be made from a number of insulating materials or combinations of these materials with the most common types used being: air, paper, polyester, polypropylene, Mylar, ceramic, glass, oil, or a variety of other $$materials^1$$.