system
Given the following post, respond as if you're commenting on Reddit:
human
If electrically charged particles were fired into a black hole, what would happen? Would there be a point at which the electro-static repulsion of the particles overcame the force of gravity?
gpt
If you send charged particles into a black hole the black hole becomes charged, and yes, there is a point where the electrostatic repulsion wins over the gravitational attraction.

This happens when (in the right units) the total charge equals the mass of the BH, in which case it is called an extremal black hole. If the charge is less it's a stable subextremal BH, if it's more then it would be a superextremal BH, actually an unstable state.

However, by sending charges into a normal subextremal black hole it is impossible to make it overcome the extremal barrier. If a particle carries a charge that would make the BH superextremal, then the electrostatic repulsion prevents the charge from falling into the black hole.