Home
Class 12
PHYSICS
A wire length 6.28m is bent into a circu...

A wire length `6.28m` is bent into a circular coil of 2 turns. If a current of `0.5A` exists in the coil, the magnetic moment of the coil is, in `Am^(2) :`

A

`(pi)/(4)`

B

`(1)/(4)`

C

`pi`

D

`4pi`

Text Solution

Verified by Experts

The correct Answer is:
1
`M=NIpir^(2),l=(2pir)N`
Promotional Banner

Topper's Solved these Questions

  • MOVING CHARGES AND MAGNETISM

    NARAYNA|Exercise ILLUSTRATION|58 Videos

  • MOVING CHARGES AND MAGNETISM

    NARAYNA|Exercise C.U.Q (AMPERE.S CIRCUITAL LAW MAGNETIC FIELD DUE TO STRAIGHT CONDUCTOR )|28 Videos

  • MOVING CHARGES AND MAGNETISM

    NARAYNA|Exercise Level =I (H.W)|42 Videos

  • MAGNETISM AND MATTER

    NARAYNA|Exercise EXERCISE - 4 (SINGLE ANSWER TYPE QUESTION)|17 Videos

  • NUCLEAR PHYSICS

    NARAYNA|Exercise LEVEL-II-(H.W)|9 Videos

Similar Questions

Explore conceptually related problems

A wire of length 6.28 m is bent into a circular coil of 2 turns. If a current of 0.5 A exists in the coil, the magnetic moment of the coil is, in A-m^2

A circular coil of diameter 7cm has 24 turns of wire carrying current of 0.75A . The magnetic moment of the coil is

A wire of length 2 m carrying a current of 1 A is bend to form a circle. The magnetic moment of the coil is (in A-m^(2) )

The electric current in a circular coil of two turns produced a magnetic induction of 0.2 T at its centre. The coil is unwound and then rewound into a circular coil of four turns. If same current flows in the coil, the magnetic induction at the centre of the coil now is

A circular coil of radius 10 cm "and" 100 turns carries a current 1A. What is the magnetic moment of the coil?

A current of 1 A passes through a circular coil of 120 turns, each of radius 50 cm. What is the magnetic moment of the coil?

A circular coil of diameter 9 cm has 30 turns of wire which carry current of 1 ampere. The magnetic moment of the coil is

NARAYNA-MOVING CHARGES AND MAGNETISM-Level -II (H.W)
  1. Two tangent galvanometers having coils of the same radius are connecte...

    Text Solution

    |

  2. A tangent galvanometer carrying a certain current gave a defelction of...

    Text Solution

    |

  3. A wire length 6.28m is bent into a circular coil of 2 turns. If a curr...

    Text Solution

    |

  4. A wire length 6.28m is bent into a circular coil of 2 turns. If a curr...

    Text Solution

    |

  5. A solenoid of 1000 turns is wound uniformly on a glass tube 50cm long ...

    Text Solution

    |

  6. A long solenoid has 200 turns per cm and carries a current i. The magn...

    Text Solution

    |

  7. A proton moving in a perpendicular magnetic field possesses kinetic en...

    Text Solution

    |

  8. Electrons accelerated by a potential differnece V enter a uniform magn...

    Text Solution

    |

  9. An electron is shot in steady electric and magnetic field E and magnet...

    Text Solution

    |

  10. A beam of protons with a velocity of 4 X 10 ^5 ms^(-1) enters a unifor...

    Text Solution

    |

  11. A unifrom magnetic field B is acting from south to north and is of m...

    Text Solution

    |

  12. An electron travelloing with a velocity bar(V)=10^(7) hat(i)m//s enter...

    Text Solution

    |

  13. A magnetic field of (4.0xx10^-3hatk)T exerts a force (4.0hati+3.0hatj)...

    Text Solution

    |

  14. A unifrom conducting wire ABC has a mass of 10g. A current of 2 A flo...

    Text Solution

    |

  15. A straight conductor carrying a current is kept in a uniform magnetic ...

    Text Solution

    |

  16. Two long parallel wires are separated by a distance of 2m. They carry ...

    Text Solution

    |

  17. Three very long straight thin wires are connected parallel to each oth...

    Text Solution

    |

  18. Three long straight conductors are arranged parallel to each other in ...

    Text Solution

    |

  19. A wire of length l is bent in the form a circular coil of some turns. ...

    Text Solution

    |

  20. A moving coil galvanometer A has 100 turns and resistance 10Omega. Ano...

    Text Solution

    |