Magnetic Dipole in a Uniform Magnetic Field

Magnetic Dipole in a Magnetic Field and the Biot-Savart Law Torque on a Current Loop in a Uniform Magnetic Field Magnetic Dipole in a Uniform Magnetic Field The Biot-Savart Law Magnetic Field on the Axis of a Circular Current Loop Magnetic Field Lines Homework

Torque on a Current Loop Parallel to a Uniform Magnetic Field

Serway/Jewett Figure 22.19




 
























 








 



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Torque on a Current Loop Parallel to a Uniform Magnetic Field (cont’d)

Serway/Jewett Figure 22.19







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Torque on a Current Loop at an Angle to a Uniform Magnetic Field

Serway/Jewett Figure 22.20







  







 

 



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is a vector perpendicular to the loop with a magnitude equal to the area of the loop.

Magnetic Dipole in a Uniform Magnetic Field 76


The magnetic dipole moment fined as  86 9 
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of the loop is de-






The SI unit of magnetic  dipole moment is the A : m . The direction of rule.

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is given by the right-hand

So, the torque can be expressed as 5




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Serway/Jewett Figure 22.21

The Biot-Savart Law

Serway/Jewett Figure 22.22

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The constant permeability of free space.



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Magnetic Field on the Axis of a Circular Current Loop

Serway/Jewett Figure 22.24

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Magnetic Field on the Axis of a Circular Current Loop (cont’d)

Serway/Jewett Figure 22.24

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