Weak magnetic fields can be measured at the surface of the brain. Although the currents causing these
Question:
Weak magnetic fields can be measured at the surface of the brain.
Although the currents causing these fields are quite complicated, we can estimate their size by modeling them as a current loop around the equator of a 16-cm-diameter (the width of a typical head) sphere.
What current is needed to produce a 3.0 pT field—the strength measured for one subject—at the pole of this sphere?
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Model Model the brain current as a simple current loop of radius ...View the full answer
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Related Book For 
Physics for Scientists and Engineers A Strategic Approach with Modern Physics
ISBN: 978-0133942651
4th edition
Authors: Randall D. Knight
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