Discuss the effect of the relative magnitudes of e0nbspand

Question

An electron is injected with a velocity u₀=a_yu₀ into the y>0 region where both an electric field E and a magnetic fieldB exist. Describe the motion of the electron if

A) E = a_zE₀ and B = a_xB₀

B) E = -a_zE₀ and B = -a_zB₀

Discuss the effect of the relative magnitudes of E₀ and B₀ on the electron paths in parts (A) and (B).