If you plug something in, say a phone or an ipad, and you turn it off completely, will it still charge?

If you plug something in, say a phone or an ipad, and you turn it off completely after it is on the cord, will it still charge? I'm arguing that yes it will still charge, but a friend claims that it will not, saying his mother, an electrical engineer, told him that it does not charge but merely gets back the energy it used on lighting the screen and that's it. She apparently says that something needs to be on to charge. Help, reddit?

Submitted January 31, 2015 at 07:39PM by FrancisBfoy http://ift.tt/15U3CL3