  The electromagnetic form factors of the trinucleons 3H and 3He are calculated
with wave functions obtained with the Argonne AV18 two-nucleon and Urbana IX
three-nucleon interactions. Full account is taken of the two-body currents
required by current conservation with the AV18 interaction as well as those
associated with N-Delta transition currents and the currents of Delta resonance
components in the wave functions. Explicit three-nucleon current operators
associated with the two-pion exchange three-nucleon interaction arising from
irreducible S-wave pion-nucleon scattering is constructed and shown to have
very little effect on the calculated magnetic form factors. The calculated
magnetic form factor of 3H, and charge form factors of both 3H and 3He are in
satisfactory agreement with the experimental data. However, the position of the
zero in the magnetic form factor of 3He is slightly underpredicted.
