Home
Class 12
PHYSICS
A short bar magnet pleaced with its axis...

A short bar magnet pleaced with its axis at `30^(@)` with a uniform external magnetic field of `0.16` Tesla expriences a torque of magnitude `0.032` Joule. The magnetic moment of the bar magnet will be

A

0.23 joule/tesla

B

0.40 joule/tesla

C

0.80 joule/tesla

D

Zero

Text Solution

Verified by Experts

The correct Answer is:
B
`tau= MB sin theta`
`rArr M= (0.032)/(0.16 xx 1//2)= 0.4 m^(2)A`
Promotional Banner

Topper's Solved these Questions

  • MAGNETISM

    ERRORLESS|Exercise NCERT BASED QUESTIONS (Earth’s Magnetism)|28 Videos

  • MAGNETISM

    ERRORLESS|Exercise NCERT BASED QUESTIONS (Magnetic Equipments)|21 Videos

  • MAGNETIC EFFECTS OF CURRENT

    ERRORLESS|Exercise ASSERTION & REASON |18 Videos

  • RAY OPTICS

    ERRORLESS|Exercise Assertion & Reason|30 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 placed with its axis at 30^(@) with a uniform external magnetic field of 0.35 T experiences a torque of magnitude equal to 4.5xx10^(-2)Nm . The magnitude of magnetic moment of the given magnet is

A short bar magnet placed with its axis at 30^(@) with a uniform external magnetic field of 0.16T experience a torque of magnitude 0.032 Nm . If the bar magnet is free to rotate, its potential energies when it is in stable and unstable equilibrium are respectively

A short bar magnet placed with its axis at 30^@ with a uniform external magnetic field of 0*25T experiences a torque of magnitude equal to 4*5xx10^-2J . What is the magnitude of magnetic moment of the magnet?

A short bar magnet placed with its axis at 30^@ with an external field of 800 G experiences a torque of 0.016 Nm. The magnetic moment of the magnet i

ERRORLESS-MAGNETISM-Assertion and Reason
  1. A short bar magnet pleaced with its axis at 30^(@) with a uniform exte...

    Text Solution

    |

  2. Assertion: We cannot think of magnetic field configuration with three ...

    Text Solution

    |

  3. Assertion: The poles of magnet cannot be separated by breaking into tw...

    Text Solution

    |

  4. Assertion: Basic difference between an electric line and magnetic line...

    Text Solution

    |

  5. Assertion: Magnetic moment of an atoms is due to both, the orbital mot...

    Text Solution

    |

  6. Assertion: When radius of circular loop carrying current is doubled, i...

    Text Solution

    |

  7. Assertion: If a compass needle be kept at magnetic north pole of the e...

    Text Solution

    |

  8. Assertion: A compass needle when placed on the magnetic north pole of ...

    Text Solution

    |

  9. Assertion : Two short magnets are placed on a cork which floats on wat...

    Text Solution

    |

  10. Assertion: The ferromagnetic substance do not obey Curie's law. Reas...

    Text Solution

    |

  11. Assertion : The properties of paramagnetic and ferromagnetic substan...

    Text Solution

    |

  12. Assertion: Soft iron is used as transformer core. Reason: Soft iron ...

    Text Solution

    |

  13. Assertion: Magnetism is relativistic. Reason: When we move along wit...

    Text Solution

    |

  14. Assertion: The earth's magnetic field does not affect the working of a...

    Text Solution

    |

  15. Assertion: Diamagnetic materials can exhibit magnetism. Reason: Diam...

    Text Solution

    |

  16. Assertion: For making permanent magnets, steel preferred over soft iro...

    Text Solution

    |

  17. Statement-1 : Gauss theorem is not applicable in magnetism. Statement-...

    Text Solution

    |

  18. Assertion: When a magnet is brought near iron nails, only translatory ...

    Text Solution

    |

  19. Assertion: When a magnetic dipole is placed in a non uniform magnetic ...

    Text Solution

    |

  20. Assertion : The susceptibility of diamagnetic materials does not dep...

    Text Solution

    |

  21. Assertion: The permeability of a ferromagnetic material is independent...

    Text Solution

    |