An electron is shot in a steady electric and magnetic field such that its velocity is V. and electric field E and magnetic field B are mutually perpendicular with magnitudes 1 volt/cm and 2 tesla respectively. What is the velocity of the electron if the Lorentz (Magnetic) force cancels with the electrostatic force on the electron?

50 ms−1 0.5 ms−1 5 ms−1 0.05 ms−1

50 ms−1

qE = qvB