Question

The angle of dip at the location in southern India is about ${18}^o$ . Would you expect a greater or a smaller dip angle in Britain (Closer to the north pole.)

Answer 1

Magnetic dip arises due to the tendency of the magnetic field lines to align itself in the direction of magnetic field. When the North end point downward in northern hemisphere regarded as positive dip and when the needle point upward in southern hemisphere it is regarded as negative dip.

Then range of the dip is from $+90^o\left(north\right)to-{90}^{\circ }\left(south\right)$since the Britain is closer to North Pole the dip is positive (higher).