  The electromagnetic potential consisting in the Coulomb plus the magnetic
moment interactions between two nucleons is studied in nucleon-deuteron
scattering. For states in which the relative N-d angular momentum L has low
values the three--nucleon problem has been solved using the correlated
hyperspherical harmonic expansion basis. For states in which the angular
momentum L has large values, explicit formulae for the nucleon-deuteron
magnetic moment interaction are derived and used to calculate the corresponding
T-matrices in Born approximation. Then, the transition matrices describing N-d
elastic scattering have been derived including an infinite number of partial
waves as required by the 1/r^3 behavior of the magnetic moment interaction.
Appreciable effects are observed in the vector analyzing powers at low
energies. The evolution of these effects by increasing the collision energy is
examined.
