An electron is injected with a velocity u0=ayu0 into the y>0 region where both an electric field E and a magnetic field B exist. Describe the motion of the electron if
A) E = azE0 and B = axB0
B) E = –azE0 and B = –azB0
Discuss the effect of the relative magnirudes of E0 and B0 on the electron paths in parts (A) and (B).