- #1
damosuz
- 72
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This is from How Stuff Works:
The power company essentially uses the Earth as one of the wires in the power system. The Earth is a pretty good conductor and it is huge, so it makes a good return path for electrons. "Ground" in the power distribution grid is literally "the ground" that's all around you when you are walking outside. It is the dirt, rocks, groundwater, etc., of the earth.
Is this true? If yes, can you do something similar with a DC circuit (connect - of source to the earth, connect + of source to a resistor and then connect the other side of the resistor to the earth)? It seems that no current would flow, since the resistance of the Earth is extremely large...
The power company essentially uses the Earth as one of the wires in the power system. The Earth is a pretty good conductor and it is huge, so it makes a good return path for electrons. "Ground" in the power distribution grid is literally "the ground" that's all around you when you are walking outside. It is the dirt, rocks, groundwater, etc., of the earth.
Is this true? If yes, can you do something similar with a DC circuit (connect - of source to the earth, connect + of source to a resistor and then connect the other side of the resistor to the earth)? It seems that no current would flow, since the resistance of the Earth is extremely large...