Magnetism Question 226
Question: A short bar magnet of magnetic moment $ 0.4J,{{T}^{-1}} $ 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) zero
C) $ -0.082,J $
D) $ 0.064,J $
Show Answer
Answer:
Correct Answer: D
Solution:
[d] For stable equilibrium $ U=-MB=-(0.4)(0.16)=-0.064,J $
BETA
