i plugged one side of a led to the ground hole in a wall socket and the other side to the positive (or neg) of a battery in it does not light up the LED.
can someone explain the physics of it. also if the unconnected side of the battery say the negative was connected to ground in florida, positive of battery connected to LED and the other leg of LED connected to earth in Ontario would that light up? What if the two places, ontario and florida were on different planets, completely disconnected?
needles to say that LED did light up when connect to the battery in both sides, so there was no error in the test. the socket is also grounded for sure.