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A transmission line strung 5 m above the ground carries a current of 400 A. What is the magnetic field on the ground directly below the wire?

A transmission line strung 5 m above the ground carries a current of 400 A. What is the magnetic field on the ground directly below the wire?

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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**Magnetic Field of a Transmission Line** A transmission line strung 5 meters above the ground carries a current of 400 A. What is the magnetic field on the ground directly below the wire? **Hint:** Review **Section 12.2 Magnetic Field Due to a Thin Straight Wire**, where a formula for the magnetic field due to a current in a long, thin, straight wire is derived. Watch the units and powers of 10. Magnetic field due to the transmission line is **3.2 mT** (milliteslas). *For comparison, the geomagnetic field is around 0.05 mT (varies by latitude). Does the transmission line significantly affect the magnetic field in the area near it?* (Note: There are no graphs or diagrams in this image.)
Transcribed Image Text:**Magnetic Field of a Transmission Line** A transmission line strung 5 meters above the ground carries a current of 400 A. What is the magnetic field on the ground directly below the wire? **Hint:** Review **Section 12.2 Magnetic Field Due to a Thin Straight Wire**, where a formula for the magnetic field due to a current in a long, thin, straight wire is derived. Watch the units and powers of 10. Magnetic field due to the transmission line is **3.2 mT** (milliteslas). *For comparison, the geomagnetic field is around 0.05 mT (varies by latitude). Does the transmission line significantly affect the magnetic field in the area near it?* (Note: There are no graphs or diagrams in this image.)
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