The total intensity of earth's magnetic field at the magnetic equator is $5$ $units$. Its value at a magnetic latitude of $37^o $ is equal to 

The value of angle of dip is zero at the magnetic equator because on it

At a place, the magnitudes of the horizontal component and total intensity of the magnetic field of the earth are $0.3 $ and $ 0.6$  Oersted respectively. The value of the angle of dip at this place will be.....$^o$

The correct relation is

$B_H$ $=$ Horizontal component of earth's magnetic field;  $B_V$ $=$ Vertical component of earth's magnetic field and $B  =$  Total intensity of earth's magnetic field

At a certain place, the horizontal component of earth's magnetic field is $\sqrt 3 $times the vertical component. The angle of dip at that place is....$^o$

A long vertical wire carries a steady current of $5.0 \,A$. Asensitive magnetic compass is placed in a plane perpendicular to the wire and $10.0$ $cm$ south of it. It registers a deflection $60^{\circ}$ north of east. The magnitude of the horizontal component of the earth's magnetic field is (permeability of free space is $4 \pi \times 10^{-7} \,N/A{ }^2$ )