Another question. Might be a stupid one, but hear goes; My partner moved my iPad whilst I was out this morning and placed it on another table. When I got home and went to use it, I noticed she had put the iPad on top of her Android phone charger cable, the actual part that get's plugged into the phone. It was touching the metal casing of the iPad. I then saw that the charger was plugged in, and was 'on'. Just curious as to whether electricity could pass through the charger on to the iPad, or does it only work once the charger is connected to the designated port?