The lines joining the places of the same horizontal intensity are known as

What is the most accepted scientific explanation for the origin of the Earth's magnetic field?

Name the elements of the earth's magnetic field.

Give information about the Earth's magnetic field lines and the location of the magnetic poles.

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....$^o$

At a place,if the earth's horizontal and vertical components of magnetic fields are equal,then the angle of dip will be.......$^o$