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Consider a very strong uniform magnetic field dire
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Answer #1

The energy associated to the magnetic filed intecation with dipole is

U=-\vec{m}\cdot \vec{B}

where m is the dipole moment and dot product is the vector scalar product.

Dipoles have a magnic moment ortogonal the filed they generate, thus energy is highest for B (m,B antiparallel) and lowest for A while is null for C,D

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