# What if I insert more charge into a charged capacitor?

Suppose we have a charged capacitor with charge = $$Q_1$$ and then an electron beam inside the positive plate of the capacitor.

The electrons entering the positive plate are repelled by the negative plate then the incoming electrons will circulate through the circuit charging the capacitor again at a charge $$Q_2 > Q_1$$.

So by the relation: $$Q = C * V$$ If $$Q$$ increases then $$C$$ or $$V$$ have to increase proportionally, as $$C$$ depends on the dielectric and the geometrical characteristics of the capacitor, so I think that the voltage on the capacitors has to increase.
Am I right?

If I'm correct, what happens to the source voltage? Is it maintained or increased or is there a short circuit?

• What happens to the source voltage depends on what kind of power source it is. Is it a power source designed to provide constant voltage regardless of current? Is it a power source designed to provide constant current regardless of voltage? – probably_someone Apr 28 at 3:40
• constant voltage regardless of current – Ricardo Casimiro Apr 28 at 4:01
• Well, then you know what happens to the source voltage. – probably_someone Apr 28 at 4:25

• @Sebastian please mark it as accepted answer if you are satisfied. Click on $\checkmark$ – peaceHoper Apr 28 at 12:36