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12.7 Exercise 7

Avg difficulty 2.5

The magnetic dipole moment of the iron atom is about 2.1×10−23A·m2.2.1 \times 10^{−23} \text{A} \cdot \text{m}^{2} . (a) Calculate the maximum magnetic dipole moment of a domain consisting of 101910^{19} iron atoms. (b) What current would have to flow through a single circular loop of wire of diameter 1.0 cm to produce this magnetic dipole moment?

OpenStax University Physics Volume 2, 12.7 Magnetism in Matter, exercise 7

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Adapted from University Physics Volume 2 © 2016 Rice University. Licensed under CC BY 4.0. Source: University Physics Volume 2. Imported at revision db44eb9.