Electric-cross-magnetic-field drift
= Electric-cross-magnetic-field drift
{title2=$\mathbf E\times\mathbf B$ drift}
{wiki=E_cross_B_drift}
In uniform perpendicular electric and magnetic fields, a charged particle's guiding centre drifts with velocity $\mathbf v_D=\mathbf E\times\mathbf B/B^2$, independently of its charge and mass. For $\mathbf E=E\mathbf e_x$ and $\mathbf B=B\mathbf e_z$, this gives $v_y=-E/B$.