Question

Assume the dipole model for earth’s magnetic field B which is given by B_V = vertical component of magnetic field =μ₀/4π 2mcosθ/r³  

B_H = Horizontal component of magnetic field = μ₀/4π sinθm/r³   

θ = 90° – lattitude as measured from magnetic equator. 

Find loci of points for which (i) |B| is minimum; (ii) dip angle is zero; and (iii) dip angle is ± 45°.

Answer 1

at θ =π/2 dip angle vanishes. Magnetic equator is again the locus.