Home
Class 11
PHYSICS
A small bar magnet has a magnetic moment...

A small bar magnet has a magnetic moment `1.2 A-m^(2)`. The magnetic field at a distance `0.1 m` on its axis will be:
`(mu_(0)=4pixx10^(-7)T-m//A)`

A

`1.2 xx 10^(-4) T`

B

`2.4 xx 10^(-4) T`

C

`2.4 xx 10^(4)T`

D

`1.2 xx 10^(4) T`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • MAGNETIC EFFECT OF ELECTRIC CURRENT

    TARGET PUBLICATION|Exercise Evaluation Test|12 Videos

  • MEASUREMENTS

    TARGET PUBLICATION|Exercise EVALUATION TEST|17 Videos

Similar Questions

Explore conceptually related problems

A short bar magnet has a length 2l and a magnetic moment 10 Am^(2) . Find the magnetic field at a distance of z = 0.1m from its centre on the axial line. Here , l is negligible as comppared to z

A bar magnet 20 cm in length has a magnetic moment of 1 Am^2 . Calculate the magnetic field at a distance: (i) 0.5 m from its centre at a point on its axial line (ii) 0.6 m from its centre at a point on its equatorial line

A small magnet of magnetic moment pixx10^(-3) Am^(2) is placed on the Y-axis at a distance of 0.1 from the origin with its axis parallel to the X-axix. A coil have 169 turns and radius 0.05 m is placed on the X-axis at a distance of 0.12 m from the origin with the axis of the coil coinciding with the X-axis. Find the magnitude and direction of the current in the coil for a compass needle placed at the origin, to point in the north-south direction.

Magnetic potential at a point due to a short magnetic dipole of moment 2 Am^(2) at a distance of 100 cm along a line making an angle of 60^(@) with the axis is (mu_(0)=4pixx10^(-7)Wb//Am)

A long solenoid has 200 turns per cm and carries a current of 2.5 amps. The magnetic field at its centre is (mu_(0)=4pixx10^(-7)"weber"//amp-m)

The pole strength of 12 cm long bar magnet is 20 A m. The magnetic induction at a point 10 cm away from the centre of the magnet on its axial line is [(mu_(0))/(4pi)=10^(-7)"H m"^(-1)]

A bar magnet has geometric length 4.8 xx 10^(-2)m . The magnet moment of bar magnet, of pole strength 20A m is?

What is the magnetic induction due to a short bar magnet of moment of 0.5 Am^(2) at a point along its axis at a distance of 20 cm from the centre of the magnet? (mu_(0)/(4pi)=10^(-7)" SI unit")

TARGET PUBLICATION-MAGNETISM-MCQs
  1. Electromagnets are made of soft iron because soft iron has

    Text Solution

    |

  2. Consider a point on an equatorial axis of a short bar magnet. The dire...

    Text Solution

    |

  3. A small bar magnet has a magnetic moment 1.2 A-m^(2). The magnetic fie...

    Text Solution

    |

  4. The bar magnet produces magnetic induction of 4 xx 10^(-5)T at a point...

    Text Solution

    |

  5. The magnetic induction at a point P on the axis is equal to the magnet...

    Text Solution

    |

  6. Two identical short bar magnets, each having magnetic moment of 10Am^(...

    Text Solution

    |

  7. Two short bar magnets of length 1cm each have magnetic moments 1.20 Am...

    Text Solution

    |

  8. The ratio of magnetic fields due to a bar magnet at the two axial poin...

    Text Solution

    |

  9. Which magnaie feld is closer to that of a bar

    Text Solution

    |

  10. A circular loop and a square loop are formed from the same wire and th...

    Text Solution

    |

  11. A charge Q is spread uniformly over an insulated ring of radius R.What...

    Text Solution

    |

  12. At neutral point, the horizontal component of the magnetic field due t...

    Text Solution

    |

  13. Assertion: If a compass needle be kept at magnetic north pole of the e...

    Text Solution

    |

  14. A bar magnet is hung by a thin cotton thread in a uniform horizontal m...

    Text Solution

    |

  15. A circular coil of diameter 10 cm is placed in a magnetic field of ind...

    Text Solution

    |

  16. Assertion: The magnetic poles of earth do not coincide with the geogra...

    Text Solution

    |

  17. The magnetic compass is not useful for navigation near the magnetic po...

    Text Solution

    |

  18. A short bar magnet with its north pole facing north forms a neutral po...

    Text Solution

    |

  19. The angle of dip at a place is delta. If the dip is measured in a plan...

    Text Solution

    |

  20. A short bar magnet is placed in the magnetic meridian with its north p...

    Text Solution

    |