Electric field along the x axis at t = 76.8 s for cone angles α = 0^° (black solid lines) and 90^° (red dots). (a) Magnitude of the total electric field. (b) Magnitude of the ambipolar electric field E_a = −∇p_e/ρ_i. (c) Magnitude of the convective electric field E_c = −υ × B. (d) Magnitude of the Hall electric field E_H = J × B/(n_ee). (e) Magnitude of the resistive contribution to the electric field E_res = ηJ. The vertical lines show the locations of the diamagnetic cavity boundary and the bow shock.