Verified Solution • 2025–26 Session
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QNEET-2013-Ph-1522: NEET 2013 Physics - Class 12 NEET-2013-Ph-1522 Solution: A current loop in a magnetic field can be in equilibrium in two …
A current loop in a magnetic field can be in equilibrium in two orientations both the equilibrium states are unstable. can be in equilibrium in two orientations one stable while the other is unstable. experiences a torque whether the field is uniform or non uniform in all orientations. can be in equilibrium in one orientation.
Multiple Choice Options
- A can be in equilibrium in two orientations, both the equilibrium states are unstable.
- B can be in equilibrium in two orientations, one stable while the other is unstable.
- C experiences a torque whether the field is uniform or non uniform in all orientations.
- D can be in equilibrium in one orientation.
Step-by-Step Verified Solution
A current loop in a magnetic field is in equilibrium in two orientations one is stable and another unstable.
When a current loop is placed in a magnetic field it experiences a torque. It is given by
_ _ = M _ _ B _ = MB sin _
where, M _ is the magnetic moment of the loop and B _ is the magnetic field.
If _ = 0 o _ _ = 0 (stable equilibrium)
If _ = 180 o _ _ = 0 (unstable equilibrium)