Home
Class 12
PHYSICS
A thin circular wire carrying a current ...

A thin circular wire carrying a current `I` has a magnetic moment `M`. The shape of the wire is changed to a square and it carries the same current. It will have a magnetic moment

A

`M`

B

`4/(pi^(2))M`

C

`4/(pi)M`

D

`(pi)/4M`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • KINETIC THEORY OF GASES

    ERRORLESS |Exercise QUESTIONS|126 Videos

  • MAGNETISM

    ERRORLESS |Exercise Assertion & Reason|1 Videos

Similar Questions

Explore conceptually related problems

A flat circular coil, carrying a current, has a magnetic moment mu

Two wires of same length are shaped into a square and a circle. If they carry same current, ratio of the magnetic moment is

A square loop is carrying a steady current I and the magnitude of its magnetic dipole moment is m.If this square loop is changed to a circular loop and it carries the same current the magnitude of the magnetic dipole moment of circular loop will be

A wire of length l is bent in the form of a square and carries a current I. What is the value of its magnetic moment?

A wire in the from of a circular loop of one turn carrying a current produces a magnetic fild B at the centre. If the same wire is looped into a coil of two turns and carreis the same current, the new value of magnetic induction at the centre is

A square loop is carrying a steady current I and the magnitude of its magnetic dipole moment is m. if this square loop is changed to a circular loop and it carries the current, the magnitude of the magnetic dipole moment of circular loop will be :

A circular coil of radius r carries I. If the same coil is now changed into a square loop carrying the same current, magnitude of its magnetic moment will

ERRORLESS -MAGNETIC EFFECT OF CURRENT-Exercise
  1. A horizontal rod of mass 10g and length 10cm is placed on a smooth pla...

    Text Solution

    |

  2. A wire of length L metre , carrying a current I ampere is bent in the...

    Text Solution

    |

  3. A thin circular wire carrying a current I has a magnetic moment M. The...

    Text Solution

    |

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

    Text Solution

    |

  5. An elastic circular wire of length l carries a current I. It is placed...

    Text Solution

    |

  6. A and B are two conductors carrying a current i in the same direction ...

    Text Solution

    |

  7. Wires 1 and 2 carrying currents i(1) and i(2) respectively are incline...

    Text Solution

    |

  8. A conducting loop carrying a current I is placed in a uniform magnetic...

    Text Solution

    |

  9. A current carrying loop is placed in a uniform magnetic field in four...

    Text Solution

    |

  10. A metallic block carrying current I is subjected to a uniform magneti...

    Text Solution

    |

  11. Two insulated rings, one of a slighlty smaller diameter than the other...

    Text Solution

    |

  12. Two particles , each of mass m and charge q, are attached to the two ...

    Text Solution

    |

  13. Two very long, straight , parallel wires carry steady currents I &-I ...

    Text Solution

    |

  14. A ring of radius R, made of an insulating material carries a charge Q ...

    Text Solution

    |

  15. What will be the resulatant field at the origin due to the four ind...

    Text Solution

    |

  16. The ratio of the magnetic field at the centre of a current carrying ci...

    Text Solution

    |

  17. Two infinite length wires carries currents 8A and 6A respectively and ...

    Text Solution

    |

  18. Figure shows a square loop ABCD with edge length a. The resistance of ...

    Text Solution

    |

  19. Figure shows the cross-sectional view of the hollow cylindrical conduc...

    Text Solution

    |

  20. A long wire AB is placed on a table. Another wire PQ of mass 1.0 g and...

    Text Solution

    |