The magnetic field strength of the Earth is 0.60 mT at the magnetic North Pole on...

   

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The magnetic field strength of the Earth is 0.60 mT at the magnetic North Pole on the Earth's surface. If the magnetic field can be modeled as a permanent magnet a the center of the earth (the Ni-Fe inner core) surrounded by a current loop with a radius equal to 0.2RE. For simplicity, assume that each contributes half of the field measured at the surface. The Radius of the Earth is 6.4 x 106 km. Make a sketch or two to illustrate the problem. a) What is the magnetic moment of the inner core? 8 points How much current flows in the outer core? 8 points b) The magnetic field strength of the Earth is 0.60 mT at the magnetic North Pole on the Earth's surface. If the magnetic field can be modeled as a permanent magnet a the center of the earth (the Ni-Fe inner core) surrounded by a current loop with a radius equal to 0.2RE. For simplicity, assume that each contributes half of the field measured at the surface. The Radius of the Earth is 6.4 x 106 km. Make a sketch or two to illustrate the problem. a) What is the magnetic moment of the inner core? 8 points How much current flows in the outer core? 8 points b)

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Answer I B a Magnetic field due to magnetic 3 130x10 B Magnetic ... View the full answer