Home
Class 12
PHYSICS
A bar magnet of magnetic moment M, is pl...

A bar magnet of magnetic moment M, is placed in a magnetic field of inductionB. The torque exerted on it is

A

`vecM xx vecB`

B

`-vec M . vecB`

C

`vecM. vecB`

D

`vecB xx vecM`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • MAGNETISM AND MATTER

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT (SECTION D)|26 Videos

  • MAGNETISM AND MATTER

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT (SECTION B)|24 Videos

  • LAWS OF MOTION

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (SECTION-D) (Assertion-Reason Type Questions)|15 Videos

  • MECHANICAL PROPERTIES OF FLUIDS

    AAKASH INSTITUTE ENGLISH|Exercise SECTION - J|9 Videos

Similar Questions

Explore conceptually related problems

A bar magnet of magnetic moment vec(M) is placed in a magnetic field of induction vec(B) . The torque exerted on it is

Potential energy of a bar mangnet of magnetic moment M placed in a magnetic field of induction B such that it makes an angle theta with the direction of B is (take theta =90^(@) as datum)

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 magnetic of magnetic moment placed along the X-axis in an magnet field .Find the torque acting on the magnetic field

The potential enargy of bar magnet of magnetic moment 8 Am ^(2) placed in a uniform magnetic field of 2 T at an angle of 120^(@) is equal to

A magnet of magnetic moment M is rotated through 360^(@) in a magnetic field H, the work done will be

A bar magnet of magnetic moment 3.0 A-m^(2) is placed in a uniform magnetic induction field of 2xx10^(-5)T . If each pole of the magnet experiences a force of 6xx10^(-4)N , the length of the magnet is

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 bar magnet of magnetic moment M is hung by a thin cotton thread in a uniform magnetic field B. Work done by the external agent to rotate the bar magnet from stable equilibrium position to 120° with the direction of magnetic field is (consider change in angular speed is zero)

A bar magnet of moment of inertia I is vibrated in a magnetic field of inducton is 0.4xx10^(-4)T . The time period period of vibration is 12 sec. The magnetic moment of the magnet is 120Am^(2) . The moment of inertia of the magnet is ("in"kgm^(2)) approximately

AAKASH INSTITUTE ENGLISH-MAGNETISM AND MATTER -ASSIGNMENT (SECTION C)
  1. Two identical bar magnets are fixed with their centres at a distance d...

    Text Solution

    |

  2. Charge q is uniformly spread on thin ring of radius R. The ring rotate...

    Text Solution

    |

  3. A bar magnet having a magnetic moment of 2xx10^(4) JT^(-1) is free to ...

    Text Solution

    |

  4. If a diamagnetic substance is brought near the North or the South pol...

    Text Solution

    |

  5. Curie temperature is the temperature above which

    Text Solution

    |

  6. Nickel shows ferromagnetic property at room temperature. If the temper...

    Text Solution

    |

  7. Above Curie temperature:-

    Text Solution

    |

  8. If the magnetic dipole moment of an atom of diamagnetic material, para...

    Text Solution

    |

  9. A bar magnet having a magnetic moment of 2xx10^(4) JT^(-1) is free to ...

    Text Solution

    |

  10. A bar magnet of magnetic moment M, is placed in a magnetic field of in...

    Text Solution

    |

  11. Tangent galvanometer is used to measure : -

    Text Solution

    |

  12. The work done in turning a magnet of magnetic moment 'M' by an angle 9...

    Text Solution

    |

  13. Dua to the earth's magnetic field, charged cosmic ray particles

    Text Solution

    |

  14. For protecting a sensitive equipment from the external magnetic field,...

    Text Solution

    |

  15. Two bar magnet having same geometry with magnetic moment M and WM are ...

    Text Solution

    |

  16. According to Curie's law, the magnetic susceptibility of a substance a...

    Text Solution

    |

  17. Diamagnetic material in a magnetic field moves :

    Text Solution

    |

  18. If the magnetic dipole moment of an atom of diamagnetic material, para...

    Text Solution

    |

  19. A current loop in a magnetic field: (1.)experiences a torque whether...

    Text Solution

    |

  20. An iron nail near a bar magnet experiences

    Text Solution

    |