We investigate the problem of the difference in the longitudinal magnetic field value measured with the use of the magnetic lines Fe I λ 525 and λ 524.7 nm as well as the discrepancy of the value for the general magnetic field of the Sun which is determined at various observatories. The observed ratio value H_‖(525)/H_‖(524.7) is compared with the calculated one for different combinations of magnetic field elements. The calculations are performed with the use of the standard model of the solar photosphere for quiet regions under the assumption that magnetic fields of different polarities are present in the range from zero to some kilogausses. The parameters of the magnetic element distribution by the magnetic field intensity are determined for which the calculated value of the ratio H_‖(525)/H_‖(524.7) is in agreement with the observed one. The profile of the line Fe I λ 525 nm for the inhomogeneous magnetic field is found to have different values of the displacement of sigma-components for different points of the profile. The displacement value is larger for the profile points which are more distant from the line center. It is shown that such a peculiarity of the profiles explains the discrepancy of the measurement results for the general magnetic field of the Sun obtained at various observatories. It is revealed that an increase in the general magnetic field module during solar activity maximums can be connected with an enhancement of a fraction of magnetic elements with kilogauss magnetic fields.