The chart should read: Magnetization [A / m] Domain Magnetization [A / m] a 3 b

Question

The chart should read:

Magnetization

[A / m]

Domain

Magnetization

[A / m]

a 3 b 3 c 5 d 4 e 3 f 6 Shown on the right are the magnetic domains of some iron bar magnet, and the table below gives the magnitude of the magnetization of each domain: What is the magnitude and direction of the total magnetization of the bar magnet? The bar magnet is now heated to a temperature high enough that the orientation of each atom in the bar changes. The bar is then cooled back down to its original temperature. What is the most likely magnitude of the total magnetization now?

Explanation / Answer

A) M=(a+e-f)i+(c-b-d)j

M=-2i+0j

M--2i (left)

magnitude=2A/m

b) M=0i-2j

M=-2j (down)

magnitude=2 A/m

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