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Physics, 22.04.2021 16:30 migos0917

Although the evidence is weak, there has been concern in recent years over possible health effects from the magnetic fields generated by electric transmission lines. A typical high-voltage transmission line is 20 mm above the ground and carries a 200 A current at a potential of 110 kV. Estimate the magnetic field strength on the ground underneath such a line.
What percentage of the earthâs magnetic field does this represent?

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