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Problem: The magnetic field of the brain has been measured to be approximately 3.0×1012 T. Although the currents that cause this field are quite complicated, we can get a rough estimate of their size by modeling them as a single circular current loop 16 cm (the width of a typical head) in diameter.
1- What current is needed to produce such a field at the center of the loop?
Show me the each and every step.
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