Space Debris: Questions from a Newbie

[Daulet]

Hey there, newbie here. I've got some questions regarding space debris which I could not find answers on my own (probably because I'm really bad at it :( ). So here they are:
-Are space debris charged? Sort of thinking of photoelectric effect and solar winds, but last one doesn't seem quite possible because of magnetic field of Earth, although I'm not really sure
-What about density by orbits?

 

[Nidum]

Have a look at this earlier thread :

https://www.physicsforums.com/threads/how-the-satellite-parts-get-damaged.826195/#post-5189684

 

[1oldman2]

http://www.space.com/16518-space-junk.html