WD magnetic field calculated using Eq. (4) for different values of the mass-accretion rate. The solid lines trace the solution with the magnetospheric radius of 0.76 R_⊙, and mass-accretion rates from 10⁻⁶ to 10⁻¹⁰ M_⊙ yr⁻¹ (marked as labels). The dashed line represents the solution with a magnetospheric radius of 0.6 R_⊙ and a mass-accretion rate of 10⁻⁶ M_⊙ yr⁻¹. The horizontal red line is traced at the magnetic field of B = 10⁶ G. The vertical dotted lines represent two WD radii: R₁ = 0.013 R_⊙ and R₂ = 0.02 R_⊙ (see text for details).