Relative error on the electric force for a recollimating oscillating solution in Kerr metric (K1, see Sect. 5.1). Color isocontours correspond to the relative error in the electric force. Field lines anchored into the black hole magnetosphere and in the accretion disk are plotted in black solid lines. The limiting field line between the inner jet coming from black hole corona and the outflow outgoing from the accretion disk is plotted in red. The “light cylinder” is indicated by a green solid line. The cylindrical radius and the distance above the equatorial plane are in units of Schwarzschild radius.