Me and a partner are doing a scince fair project about wireless electricity and I don't want to have a long neutral wire can I connect two neutral points by real earth (that is to say large copper pipes I hammered in my yard)?
Answers (1)
Earth, or ground, is whatever you choose for a zero point. Dirt has a resistance and will generate noise. If you have two connections to earth you will learn that in a dramatic fashion. For instance in an airplane they have a wire they call "frame" and all the equipment is connected to that wire, but only one connection per piece of equipment, and only one connection to the airplane. If that wire is somehow connected to a second point in the plane it produce an unbelievable amount of noise.
No, you can not connect two "neutral" points in a circuit with separate connections to buried pipes. Only one connection per circuit. Everything connects to that point, even if the wire is very long.