In annular plasma is contained in an axial magnetic field, Bz = 0.1 Tesla, between a pair f radially separated electrodes, as shown below. The voltage difference between the lectrodes is 10 kV. The inner and outer electrode radii are 15 cm and 20 cm espectively. Calculate the ExB velocity, and state the direction, for electrons and ions. You can approximate the electric field as constant. If the plasma rotates as a rigid body, calculate its angular velocity [radians/s]. electrodes r-0 plane plasma Bz=0.1 T O 10 kV 20 cm 15 cm