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Magnetism And Matter — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsMagnetism And Matter1 Mark
MCQ
When does a magnetic dipole possess maximum potential energy inside a magnetic field?
  • ✓
    Magnetic moment and magnetic field are antiparallel.
  • B
    Magnetic moment and magnetic field are parallel.
  • C
    The magnetic moment is zero.
  • D
    The magnetic field is zero.
✓

Answer

Correct option: A.
Magnetic moment and magnetic field are antiparallel.

A magnetic dipole possess maximum potential energy when its magnetic moment and the magnetic field are antiparallel. When the magnetic dipole is aligned along the magnetic field, i.e. when $\theta = 180^\circ,$ it is in unstable equilibrium having maximum potential energy.

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