Home
Class 11
PHYSICS
The earth's magnetic field at the equato...

The earth's magnetic field at the equator is approximately `0*4G`, Estimate the earth's dipole moment.

A

`3.7 xx 10^(23)A m^(2)`

B

`sqrt2 A m^(2)`

C

`1.5 xx 10^(23) A m^2`

D

`1.05 xx 10^(23)A m^(2)`

Text Solution

Verified by Experts

The correct Answer is:
D
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

The study of earth's magnetic field is called as

The strength of the earth's magnetic field is

Earth's magnetic field at the equator is approximately 4 xx 10^-5 tesla, R = 6.4 xx 10^ m, mu_o = 4pi xx 10^-7 SI unit. Calculate Earth's dipole moment.

What are magnetic maps of the Earth?

What are magnetic maps of the Earth.

The direction of earth's magnetic field at any place is specified in terms of

The dipole moment of a circular loop carrying a current I, is m and the magnetic field at the centre of the loop is B_(1) . When the dipole moment is doubled by keeping the current constant, the magnetic field at the centre of the loop is B_(2) . The ratio (B_(1))/(B_(2)) is:

A magnetic needle free to rotate in a vertical plane parallel to the magnetic meridian, has its north tip pointing down at 21^@ 48^1 with the horizontal. If the horizontal component of the earth's magnetic induction at that place is 3.5 xx 10^-5 T, determine the earth's magnetic induction at that place.

Earth's magnetic field always has a horizontal component except at

TARGET PUBLICATION-MAGNETISM-MCQs
  1. The ratio of magnetic fields due to a bar magnet at the two axial poin...

    Text Solution

    |

  2. Which magnetic field is closer to that of a bar

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  13. A bar magnet is 10 cm long is kept with its north (N) pole pointing no...

    Text Solution

    |

  14. The valence electron in the lithium atom is moving with a speed of 1.8...

    Text Solution

    |

  15. Two short magnets with pole strengths of 100 ab ampere-cm and 64 ab am...

    Text Solution

    |

  16. When magnetised, length of an iron bar

    Text Solution

    |

  17. A bar magnet is placed with its north pole towards geographic north. T...

    Text Solution

    |

  18. Choose the incorrect statement.

    Text Solution

    |

  19. A ship is sailing due west according to Mariner's compass. If the decl...

    Text Solution

    |

  20. The earth's magnetic field at the equator is approximately 0*4G, Estim...

    Text Solution

    |