First slide

Earth's Magnetism

Question

The angle of dip at a place is $60^{o}$ . At this place the total intensity of earth's magnetic field is 0.64 units. The horizontal intensity of earth's magnetic field at this place is

Easy

A

1.28 units
B

0.64 units
C

0.16 units
D

0.32 units

Solution

$B_{H} = B cosϕ = 0.64 x \cos 60^{o} = 0.64 x \frac{1}{2} = 0.32 units$

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