Question: 5 3 . | | The heart produces a weak magnetic field that can be used to diagnose certain heart problems. It is a dipole

53.|| The heart produces a weak magnetic field that can be used
to diagnose certain heart problems. It is a dipole field produced
by a current loop in the outer layers of the heart.
a. It is estimated that the field at the center of the heart is 90 pT.
What current must circulate around an 8.0-cm-diameter loop,
about the size of a human heart, to produce this field?
b. What is the magnitude of the hearts magnetic dipole moment?

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