Q. 10

# Let the magnetic field on earth be modeled by that of a point magnetic dipole at the center of earth. The angle of dip at a point on the geographical equator

A. is always zero.

B. can be zero at specific points.

C. can be positive or negative.

D. is bounded.

Answer :

The angle of dip is the angle formed between the magnetic axis and the geographical axis of the earth. The angle can be positive as well as negative, positive angle defines that the magnetic field is pointing downward where negative is vice versa. Now the magnetic dip is only zero (nearly zero) at the equator because the magnetic lines of force are horizontal. Thus, the value ranges from to .

Rate this question :

Let the magnetic field on earth be modeled by that of a point magnetic dipole at the center of earth. The angle of dip at a point on the geographical equator

Physics - ExemplarAnswer the following questions:

The earth’s field departs from its dipole shape substantially at large distances (greater than about 30,000 km). What agencies may be responsible for this distortion?

NCERT - Physics Part-I