Physics, 18.04.2020 02:06 zimbabwayjerry
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 20m above the ground and carries a 200 A current at a potential of 110 kV.
What is the magnetic field strength on the ground directly under such a transmission line?
Express your answer to two significant figures and include the appropriate units.
B =
What percentage is this of the earth's magnetic field of 50 ?T?
Express your answer to two significant figures and include the appropriate units.
Bwire Bearth =
Answers: 3
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