A uniform electric field with an intensity of E = 2 kv / m is directed perpendicularly

A uniform electric field with an intensity of E = 2 kv / m is directed perpendicularly to a homogeneous pole with an induction of b = 0.02 T. An electron moves perpendicularly to both fields along a rectilinear trajectory. Find the electron velocity ..

An electron moving in a magnetic and uniform electric field is affected by two forces:
the Lorentz force Fl = evB and the Coulomb force Fc = eE,
where e is the electron charge, v is the speed, B is the magnetic field induction, E is the electric field strength.
For an electron to move in a straight line, these forces must be equally directed in opposite directions.
evB = eE;
v = E / B = (2000 V / m) / (0.02 T) = 10⁵ m / s.
Answer: 10⁵ m / s.