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Most Important Selected Qs for JEE AdvancedPhysicsMagnetic Effects of Current

When a current-carrying coil is placed in a uniform magnetic field with its magnetic moment antiparallel to the field.

Options

  1. ATorque on it is maximum
  2. BTorque on it is zero
  3. CPotential energy is maximum
  4. DDipole is in unstable equilibrium.

Correct answer

D. Dipole is in unstable equilibrium.

Step-by-step solution

= M B and U =- M B here M and B are anti-parallel = O and U =+ MB (maximum)

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