Magnetism Question 226
A short bar magnet of magnetic moment $ 0.4,A\cdot m^2 $ is placed in a uniform magnetic field of $ 0.16,T $ . The magnet is in stable equilibrium when the potential energy is
Options:
A) $ -0.64J $
B) 0
C) $ -0.082,J $
D) $ 0.064,J $
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Answer:
Correct Answer: D
Solution:
[d] For stable equilibrium $ U=-MB=-(0.4)(0.16)=-0.064,J $
BETA
