Magnetic Force on Current-Carrying Wire Video Lessons

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Problem: A DC power line for a light-rail system carries 1000 A at an angle of 30.0° to the Earth's 5.00x10-5 T field. a. What is the force on a 100-m section of this line? b. Discuss practical concerns this presents, if any.

FREE Expert Solution

The magnitude of the force is given by:

F=ilBsinθ, where i is current through the DC powerline, l is the length of the power line, B is the Earth's magnetic field strength, and θ is the angle between i and B.

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Problem Details

A DC power line for a light-rail system carries 1000 A at an angle of 30.0° to the Earth's 5.00x10-5 T field. 

a. What is the force on a 100-m section of this line? 

b. Discuss practical concerns this presents, if any.

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