- #1
GarthVader
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1. You are standing directly under a high-voltage power line that is 4.5m above you, and a detailed map that you have indicates that the power line runs exactly north to south. Your compass needle makes an angle of 32 degrees to the east with respect to the power line's direction.
a)Knowing that the magnitude of the Earth's magnetic field is approximately 5.0*10^-5 T, determine the magnitude and direction of the magnetic field produced by the power line at ground level.
b)How much current is being carried by the power line?
c)Is the current flowing toward the north or toward the south?
2. B = μoI/2πr
3. The basic set up is where I'm stuck. I can answer questions B and C rather easily once I know A, but I'm am at a standstill on how to acquire the B field for the power line. Any help would be greatly appreciated!
a)Knowing that the magnitude of the Earth's magnetic field is approximately 5.0*10^-5 T, determine the magnitude and direction of the magnetic field produced by the power line at ground level.
b)How much current is being carried by the power line?
c)Is the current flowing toward the north or toward the south?
2. B = μoI/2πr
3. The basic set up is where I'm stuck. I can answer questions B and C rather easily once I know A, but I'm am at a standstill on how to acquire the B field for the power line. Any help would be greatly appreciated!