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Q.
Which of the following loop is in stable equilibrium
NTA AbhyasNTA Abhyas 2022
Solution:
For stable equilibrium potential energy should
be minimum
$U=-MBcos\theta $
$\theta \rightarrow $ angle $b/w\overset{ \rightarrow }{M}$ and $\overset{ \rightarrow }{B}$
$U_{min}$ at $\theta =0^\circ $