Although the evidence is weak, there has been concern in
Chapter 24, Problem 6P(choose chapter or problem)
Problem 6P
Although the evidence is weak, there has been concern in recent years over possible health effects from the magnetic fields generated by transmission lines. A typical high-voltage transmission line is 20 m off the ground and carries a current of 200 A. Estimate the magnetic field strength on the ground underneath such a line. What percentage of the earth’s magnetic field does this represent?
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