Take a bare wire from the live wire and dip in water.
Put your hand into the water.
Pray hard your ELCB in your home is in working condition.
Does that form a close loop?
Run a 12V LED with a 12V battery.
Tee one wire from the + point and dip in water.
Put your hands into the water.
Does that form a close loop?
If you know what's going on then don't need to ask, else you dun know right?
AC and DC means current or voltage ???
BTW current don't work, the electrons do the work!