Question

The angle of dip at a place is ${60}^{\circ }$. 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 ___units.

Answer 1

horizontal field intensity


$\varphi$ = angle of dip
The horizonatal intensity
$\left(B_H\right)=B\cos \varphi$

(B = total intensity)
$=0.64units\times \cos {60}^{\circ }$
$=\frac{0.64}{2}$
$B_H=0.32$ units