Subject: Further to the effects of electrons

A follow up to your useful reply. (http://www.madsci.org/posts/
1187054157.Ph.r.html)

Suppose there were a large number of very energetic electrons entering a room, 
by whatever means - would that then create some sort of magnetic field in the 
room? Would that in and of itself constitute ionising radiation? Where would 
these electrons end up, and to what effect?

In the example from the previous reply, if the massive electric charge from a 
sugar lump were somehow released into the surrounding air, but gradually - what 
would be the effect?

(Sorry for what are probably infantile questions, but I'm just looking for 
different ways of visualising this sort of thing.)

Re: Further to the effects of electrons