  We show that the removal of angular momentum is possible in the presence of
large scale magnetic stresses, arisen by fields much stronger than that
required for magnetorotational instability, in geometrically thick, advective,
sub-Keplerian accretion flows around black holes in steady-state, in the
complete absence of alpha-viscosity. The efficiency of such angular momentum
transfer via Maxwell stress, with the field well below its equipartition value,
could be equivalent to that of alpha-viscosity, arisen via Reynolds stress,
with $\alpha=0.01-0.08$. We find in our simpler vertically averaged advective
disk model that stronger the magnetic field and/or larger the vertical-gradient
of azimuthal component of magnetic field, stronger the rate of angular momentum
transfer is, which in turn may lead to a faster rate of outflowing matter,
which has important implications to describe the hard spectral states of black
hole sources. When the generic origin of alpha-viscosity is still being
explored, mechanism of efficient angular momentum transfer via magnetic
stresses alone is very interesting.
