Home
Class 12
PHYSICS
A circular loop has a radius of 5 cm and...

A circular loop has a radius of `5 cm` and it is carrying a current of `0.1 amp`. It magneitc moment is

A

`1.32xx10^(-4) amp m^(2)`

B

`2.62xx10^(-4) amp m^(2)`

C

`5.25xx10^(-4) amp m^(2)`

D

`7.85xx10^(-4) amp m^(2)`

Text Solution

Verified by Experts

The correct Answer is:
D
`M = iA = 0.1xx pi xx(0.05)^(2)`
`= (0.1)xx3.14xx25xx10^(-4) = 7.85xx10^(-4) amp-m^(2)`
Promotional Banner

Topper's Solved these Questions

  • SOURCE AND EFFECT OF MAGNETIC FIELD

    A2Z|Exercise Assertion- Reason|6 Videos

  • SEMICONDUCTOR ELECTRONICS

    A2Z|Exercise EXERCISE|29 Videos

  • WAVE OPTICS

    A2Z|Exercise Section D - Chapter End Test|29 Videos

Similar Questions

Explore conceptually related problems

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

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

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

A circular coil of 300 turns and diameter 14cm carries a current of 15A . What is the magnetic moment of the loop?

A circular loop of radius 0.0157m carries a current of 2.0 amp. The magnetic field at the centre of the loop is (mu_(0)=4pixx10^(-7)"weber"//amp-m)

A circular coil of radius r, and carrying a current I has a magnetic dipole moment M. What is its new dipole moment, if the radius of the coil is doubled and the current passing through the coil is halved?

A2Z-SOURCE AND EFFECT OF MAGNETIC FIELD-Section D - Chapter End Test
  1. Two thin long parallel wires seperated by a distance 'b' are carrying...

    Text Solution

    |

  2. The charge on a particle Y is double the charge on particle X.These tw...

    Text Solution

    |

  3. A battery is connected between two points A and B on the circumference...

    Text Solution

    |

  4. A proton , a deutron and alpha )- particle having the same kinetic en...

    Text Solution

    |

  5. Three long straight and parallel wires carrying currents are arranged...

    Text Solution

    |

  6. Two straight horizontal parallel wires are carrying the same current i...

    Text Solution

    |

  7. A proton and an alpha-particle enter a uniform magnetic field moving w...

    Text Solution

    |

  8. A proton (mass = 1.67xx10^(-27) kg and charge 1.6xx10^(-19) C) enters ...

    Text Solution

    |

  9. An alpha particle travels in a circular path of radius 0.45 m in a mag...

    Text Solution

    |

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

    Text Solution

    |

  11. Two thick wires and two thin wires, all of the same materais and sam...

    Text Solution

    |

  12. Let current i=2A be flowing in each part of a wire frame as shown in F...

    Text Solution

    |

  13. A circular loop has a radius of 5 cm and it is carrying a current of 0...

    Text Solution

    |

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

    Text Solution

    |

  15. In the given figure net magnetic field at O will be

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  18. A circular current carrying loop of 100 turns and radius 10 cm is pla...

    Text Solution

    |

  19. Assertion: Cyclotron does not accelerate. Reason: Mass of the elect...

    Text Solution

    |

  20. Assertion: magnetic field due to a infinite straight conductor varies...

    Text Solution

    |