Hello Forum,
for current to flow in a circuit and loads to operate the circuit needs to be closed with two wires, one for the current to go and the other as return wire.
I have seen application (telegraph) where only one conductor is used. The other conductor is represented by earth.... Is earth a good conductor?
If wet, maybe. I guess there is also a lot of resistance at the connection between the load and earth......
If earth can behave as a low resistance conductor, why is it not used in power lines?
thanks,
antennaboy
for current to flow in a circuit and loads to operate the circuit needs to be closed with two wires, one for the current to go and the other as return wire.
I have seen application (telegraph) where only one conductor is used. The other conductor is represented by earth.... Is earth a good conductor?
If wet, maybe. I guess there is also a lot of resistance at the connection between the load and earth......
If earth can behave as a low resistance conductor, why is it not used in power lines?
thanks,
antennaboy