Is there any concept in standard physics of an electromagnetic 
equivalent to a black hole?

Ray:

For a simple answer to all 3 of your questions.See: 

 bookI   and   BookII

above.

Milo   Milo

I observe that in a hydrogen atom the electromagnetic force is ~10^40 
stronger than the gravitational force. Also, a proton is ~10^40 too low 
in mass to be a gravitational black hole. Therefore if there were an 
electromagnetic equivalent to a black hole, a proton would seem to have 
the right properties to be one would it not?

Ray Tomes