Home
Class 12
PHYSICS
A short bar magnet of moment 0*32JT^-1 i...

A short bar magnet of moment `0*32JT^-1` is placed in a uniform external magnetic field of `0*15T`, if the bar is free to rotate in the plane of the field, which orientations would correspond to its, (i) stable and (ii) unstable equilibrium? What is the potential energy of the magnet in each case?

A

`4.8 xx 10^(-2) J`

B

`9.6 xx 10^(-2) J`

C

`2.4 xx 10^(-2) J`

D

`1.2 xx 10^(-2) J`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • NTA NEET SET 110

    NTA MOCK TESTS|Exercise PHYSICS|45 Videos

  • NTA NEET SET 114

    NTA MOCK TESTS|Exercise PHYSICS|45 Videos

Similar Questions

Explore conceptually related problems

A short bar magnet placed with its axis at 30^@ with a uniform external magnetic field of 0*16T experiences a torque of magnitude 0*032J . Estimate the magnetic moment of the magnet. If the bar were free to rotate, which orientations would correspond to its (i) , stable and (ii), unstable equilibrium? What is the potential energy of the magnet in the two case?

A short bar magnet of magnetic moment 0*4JT^-1 is placed in a uniform magnetic field of 0*16T . The magnet is in stable equilibrium when the potencial energy is

A current of 7*0A is flowing in a plane circular coil of radius 1*0cm having 100 turns. The coil is placed in a uniform magnetic field of 0*2Wb//m^2 . If the coil is free to rotate, what orientation would correspond to its (i) stable equilibrium and (ii) unstable equilibrium? Calculate potential energy of the coil in the two cases.

A short magnet placed with its axis making an angle with a uniform external magnetic field of induction B experiences a torque (tau) . If the magnet is free to rotate, which orientation would correspong to its stable and unstable equilibrium.

A short bar magnet having magnetic moment M=0.80 JT^1 is placed in uniform magnetic field of 0.30 T. If bar magnet is free to rotate in plane of field, then (where U is potential energy and tau is torque)

A short bar magnet having magnetic moment M = 0.80 JT^(-1) is placed in uniform magnetic field of 0.30 T.If bar magnet is free to rotate in plane of field,(Where U is potential energy and tau is torque)

NTA MOCK TESTS-NTA NEET SET 113-PHYSICS
  1. Four identical spheres each of radius 10 cm and mass 1 kg are placed o...

    Text Solution

    |

  2. A small coin of mass 80g is placed on the horizontal surface of a rota...

    Text Solution

    |

  3. A short bar magnet of moment 0*32JT^-1 is placed in a uniform external...

    Text Solution

    |

  4. In the circuit shown as P != R and the reading of the galvanometer G i...

    Text Solution

    |

  5. The ratio of voltage sensitivity (VS) and current sensitivity (IS) of ...

    Text Solution

    |

  6. A wire of length l is formed into a circular loop of one turn only and...

    Text Solution

    |

  7. In series LCR circuit R = 18 Omega and impedence is 33 Omega. An ...

    Text Solution

    |

  8. A parallel plate air capacitor has a capacitance C. When it is half fi...

    Text Solution

    |

  9. In the adjoining figure, the electric field lines for charges q1 and q...

    Text Solution

    |

  10. When a body is taken from the equator to the poles, its weight

    Text Solution

    |

  11. Two particles of masses 'm' and '9m' are separated by a distance 'r'. ...

    Text Solution

    |

  12. A body takes T minutes to cool from 62^@C to 61^@C when the surroundin...

    Text Solution

    |

  13. In a Carnot engine when T(2) = 0^(@)C and T(1) = 200^(@)C its efficien...

    Text Solution

    |

  14. A fixed mass of a gas is first heated isobarically to double the volum...

    Text Solution

    |

  15. A current- carrying straight wire is kept along the axis of a circular...

    Text Solution

    |

  16. The force between two parallel current carrying wires is independent o...

    Text Solution

    |

  17. A ball A is thrown up vertically with a speed u and at the same instan...

    Text Solution

    |

  18. The maximum height attained by a projectile when thrown at an angle th...

    Text Solution

    |

  19. If the mass of A=10 kg, coefficient of static friction=0.22, coefficie...

    Text Solution

    |

  20. A block moves down a smooth inclined plane of inclination theta. Its v...

    Text Solution

    |