Home
Class 12
PHYSICS
A bar magnet is held perpendicular to a ...

A bar magnet is held perpendicular to a uniform magnetic field. If the couple acting on the magnet is to be halved by rotating it, then the angle by which it is to be rotated is

A

`30^(@)`

B

`45^(@)`

C

`60^(@)`

D

`90^(@)`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • MAGNETISM

    TARGET PUBLICATION|Exercise EVALUATION TEST|14 Videos

  • MAGNETISM

    TARGET PUBLICATION|Exercise CRITICAL THINKING|24 Videos

  • MAGNETIC EFFECT OF ELECTRIC CURRENT

    TARGET PUBLICATION|Exercise EVALUATION TEST|19 Videos

  • MODEL QUESTION PAPER

    TARGET PUBLICATION|Exercise MODEL QUESTION PAPER -II|47 Videos

Similar Questions

Explore conceptually related problems

A bar magnet is held at right angle to a uniform magneitc field. The couple acting on the acting on the magnet is to be halved by rotating it form this position. The angle of rotation is

A "bar" magnet is at right angles to a uniform magnetic field. The couple acting on the magnet is to be one fourth by rotating it from the position. The angle of rotation is

When a bar magnet is placed in a non-uniform magnetic field, it performs

A bar magnet is placed inside a uniform magnetic field, What does in experience?

A charged particle enters a uniform magnetic field perpendicular to it. The magnetic field

A circular loop is kept perpendicular to a uniform magnetic field. Loop is rotated about its diameter with constant angular velocity.

A bar magnet is suspended in a uniform magnetic field in a position such that it experiences maxiumum torque. The angle through which it must be rotated from this position such that it experiences half of the maximum torque. The angle through which it must be rotated from this positon such that it experiences half of the maxium troque is

Bar magnet as an equivalent solenoid |The dipole in a uniform magnetic field

TARGET PUBLICATION-MAGNETISM-COMPETITIVE THINKING
  1. A circular coil of radius 10 cm "and" 100 turns carries a current 1A. ...

    Text Solution

    |

  2. A bar magnet of length 10cm and having the pole strength equal to 10^(...

    Text Solution

    |

  3. A bar magnet is held perpendicular to a uniform magnetic field. If the...

    Text Solution

    |

  4. The rartio ("in" S 1 units) of magnetic dipole moment to that of the a...

    Text Solution

    |

  5. The magnetic moment of electron due to orbital motion is proport...

    Text Solution

    |

  6. A particle of charge q and mass m moves in a circular orbit of radius ...

    Text Solution

    |

  7. Gyromagnetic ratio of the electron revolving in a circular orbit of hy...

    Text Solution

    |

  8. If the angular momentum of an electron is vec(J) then the magnitude of...

    Text Solution

    |

  9. If M(z) = magnetisation of paramagnetic sample B= external magnetic fi...

    Text Solution

    |

  10. A bar magnet has length 3 cm, cross-sectional area 2 cm^(3) and magn...

    Text Solution

    |

  11. Magnetic susceptibility of a paramagnetic substance is

    Text Solution

    |

  12. The magnetic field (B) inside a long solenoid having n turns per unit ...

    Text Solution

    |

  13. Relative permeability of iron is 5500, then its magnetic susceptibilit...

    Text Solution

    |

  14. A bar magnet has coercivity 4xx10^(3) Am^(-1). It is desired to demagn...

    Text Solution

    |

  15. An iron rod is placed parallel to magnetic field of intensity 2000 Am^...

    Text Solution

    |

  16. A magnetizing field of 5000 A/m produces a magnetic flux of 5 xx 10^(-...

    Text Solution

    |

  17. The magnetic moment of atomic neon is

    Text Solution

    |

  18. The magnetic susceptibility is negative for

    Text Solution

    |

  19. Which of the following statements are ture about the magnetic susc...

    Text Solution

    |

  20. Magnetic susceptibility for a paramagnetic and diamagnetic materials i...

    Text Solution

    |