The magnetic compass is not useful for naviga | vedclass

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Question

(B) magnetic compass needle is designed to rotate in a horizontal plane to indicate the direction of the horizontal component of the Earth's magnetic

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The magnetic field near the poles is almost vertical

Vedclass · Answer

(B) magnetic compass needle is designed to rotate in a horizontal plane to indicate the direction of the horizontal component of the Earth's magnetic field $(B_H)$.Near the magnetic poles,the Earth's magnetic field lines are almost perpendicular to the surface of the Earth,meaning the field is almost entirely vertical.Consequently,the horizontal component $(B_H)$ becomes negligible or zero.Since the compass needle cannot align itself horizontally in the absence of a horizontal magnetic field,it becomes useless for navigation in these regions.

The magnetic compass is not useful for navigation near the magnetic poles because

Similar Questions

Lines which represent places of constant angle of dip are called

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The correct relation is:
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The magnetic field of the Earth is due to

At a certain place,the horizontal component of the Earth's magnetic field is $B_0$ and the angle of dip is $45^o$. The total intensity of the Earth's magnetic field at that place will be:

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