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The earth's magnetic field may be consid...

The earth's magnetic field may be considered to be due to a short magnet placed at the centre of the earth annd oriented along the magnetic south-north direction. The ratio of the magnitude of the magnetic field on the earth's magnetic equator to that at the magnetic poles is

A

`1:2`

B

`2:1`

C

`1:4`

D

`4:1`

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The correct Answer is:
A
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Knowledge Check

  • The earth's magnetic field is approximately

    A
    1 Tesla
    B
    2 Gauss
    C
    `10^(4)` Tesla
    D
    1 Gauss

  • The magnetic field of earth is due to

    A
    Motion and distribution of some material in and outside the earth
    B
    Interaction of cosmic rays with the current of earth
    C
    A magnetic dipole buried at the centre of the earth
    D
    Induction effect of the sun

  • The north pole of earth magnet is in the :

    A
    geographical south
    B
    geographical east
    C
    geographical west
    D
    geographical north

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