Hm, assuming one knows what they are doing, and I do, a level ten character with destruction as a main skill could be dealing... 75 damage per fireball, barring weakness spells or poisons.
I usually have some powerful spells by level ten, as well as some battle field control type spells(force push, pull, drain speed), though I really like using magic. So much cool stuff.
I'd say that in vanilla stats, 200 HP at level 100 is rather weak, since I can make a drain health spell that deals about that or more. In fact, I have one from Spell tomes that is drain health 350 for 3 seconds. And it's only a level 3 spell(can't remember how to spell some of the ranks, so I go by level), so I can often cast it by level 10.