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Problem: The earth's magnetic field, with a magnetic dipole moment of 8.5×1022Am2, is generated by currents within the molten iron of the earth's outer core. (The inner core is solid iron.) As a simple model, consider the outer core to be a current loop made of a 1000-km-diameter "wire" of molten iron. The loop diameter, measured between the centers of the "wires", is 3030km.
Part A: What is the current in the current loop?
Answer should be in Ampere. (A)
I need expert help to solve the above problem.
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