Home
Class 12
PHYSICS
When a current carrying coil is placed i...

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

A

torque on it is maximum

B

torque on it is zero

C

potential energy is maximum

D

dipole is in unstable equilibrium

Text Solution

Verified by Experts

The correct Answer is:
B, C, D
`theta=180^@`
`tau=mBsintheta=0`
`U=-Mbcostheta=+MB=maximum
Promotional Banner

Topper's Solved these Questions

  • MAGNETICS

    DC PANDEY|Exercise INTRODUCTORY EXERCISE|1 Videos

  • MAGNETICS

    DC PANDEY|Exercise SUBJECTIVE_TYPE|1 Videos

  • MAGNETICS

    DC PANDEY|Exercise MCQ_TYPE|1 Videos

  • MAGNETIC FIELD AND FORCES

    DC PANDEY|Exercise Medical entrance s gallery|59 Videos

  • MAGNETISM AND MATTER

    DC PANDEY|Exercise Medical gallery|1 Videos

Similar Questions

Explore conceptually related problems

When a current carrying coil is situated in a uniform magnetic field with its magnetic moment antiparallel to the field i) Torque on it is maximum ii) Torque on it is minimum iii) PE of loop is maximum iv)PE of loop is minimum

A current carrying conductor placed in a uniform magnetic field , experience

A current carrying loop in a uniform magnetic field will experience

A bar magnet is placed in a uniform magnetic field with its magnetic moment making an angle theta with the field. Write expressions for torque on the bar magnet and potential energy of magnet in this orientation. When it this energy minimum?

A coil carrying electric current is placed in uniform magnetic field

A current i flows in a circular coil of radius r . If the coil is placed in a uniform magnetic field B with its plane parallel to the field, magnitude of the torque that acts on the coil is

DC PANDEY-MAGNETICS-Exercise
  1. a charged particle moves in a gravity free space without change in vel...

    Text Solution

    |

  2. A charged particle of unit mass and unit charge moves with velocity ve...

    Text Solution

    |

  3. When a current carrying coil is placed in a uniform magnetic field wit...

    Text Solution

    |

  4. If as long cylindrical coductor carreis a steady current parallel to i...

    Text Solution

    |

  5. An infinitely long straight wire is carrying a current I1. Adjacent to...

    Text Solution

    |

  6. A charge particle is moving along positive y-axis in uniform electric ...

    Text Solution

    |

  7. A charged particle revolves in circular path in uniform magnetic field...

    Text Solution

    |

  8. abcd is a square. There is a current I in wire efg as shown. Choose th...

    Text Solution

    |

  9. There are two wires ab and cd in a vertical plane as shown in figure. ...

    Text Solution

    |

  10. An equilateral triangular frame with side a carrying a current I is pl...

    Text Solution

    |

  11. Find an expression for the magnetic dipole moment and magnetic field...

    Text Solution

    |

  12. A square loop of side 6 cm carries a current of 30 A. Calculate the ma...

    Text Solution

    |

  13. A positively charged particle having charge q1 = 1 C and mass m1 =40 g...

    Text Solution

    |

  14. A non-relativistic proton beam passes without deviation through a regi...

    Text Solution

    |

  15. A positively charged particle, having charge q, is accelerated by a po...

    Text Solution

    |

  16. A charged particle having charge 10^-6 C and mass of 10^-10 kg is fire...

    Text Solution

    |

  17. A uniform constant magnetic field B is directed at an angle of 45^(@) ...

    Text Solution

    |

  18. A ring of radius R having unifromly distributed charge Q is mounted on...

    Text Solution

    |

  19. Figure shows a cross-section of a long ribbon of width omega that is c...

    Text Solution

    |

  20. A particle of mass m having a charge q enters into a circular region o...

    Text Solution

    |