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Write the value of Horizontal componen...

Write the value of
Horizontal component .

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Horizontal component :
The Earth's magnetic field is parallel to the surface of the Earth (i.e., horizontal ) which implies that the needle of magnetic compass rests horizontally at an angle of dip, `I = 0^(@)` as shown in figure
`B_(H) = B_(E)`
` B_(v) = 0 `
This implies that the horizontal component is maximum at equator and vertical component is zero at equator.
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