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The magnetic field of the brain has been measured to be approximately 3.0x10-12 T. A simple...

The magnetic field of the brain has been measured to be approximately 3.0x10-12 T. A simple estimate of the related currents can be obtained by assuming that the magnetic field is due to a single current loop with a diameter of 16 cm (the width of a typical head). What current is needed to produce such a field at the center of the loop?
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Answer #1

The field at the centre of the current loop is given by, B = \muoI/2R, where R is the radius of the loop, I is the current in the loop and \muo= 4\pi*10-7H/m

=> I = 2BR/ \muo= 3.82*10-7C

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