Yes you can.
Keep it turned off while charging.
It is safe to continue working on your tablet while charging it. There is no adverse effect. You should not however leave your tablet on charge all the time or it can affect your devices battery life.
In order to charge the tablet from the computer - you need to leave the computer switched on.
no you don't have to but if you want to use it while it is charging then you can
Absolutely. Charging means power is going to the lithium battery cell. playing with your itouch while it's charging doesn't affect it's charging at all .
yes, you do with all the RC helicopters I've ever had. but don't leave the actual chopper on or it won't charge.
Yes you can, the PSP battery will continue to charge even when you are playing. I would not recommend to do that, it is better if you leave it to charge and then play.
No, charging your tablet device while working or using it does not damage it. However, excessive charging of your electronics can impact your battery life.
No, stop charging and replace.
If it is an iPod Touch, yes, you can work on an iPod or use the iPod while it is charging.
Yes you can but you will have to take it to a Paintball veils or wholesaler to make sure it is safe and legal to use while playing
no charging it while on is the same as while off the only thing different is maybe one or two apps won't work while charging and you can't move too much do to the short charger for ipods