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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

0.043055555555556

B

0.084027777777778

C

0.044444444444444

D

0.16736111111111

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