An electric field of intensity 6×10⁴ V/m is applied perpendicular to the direction of motion of the electron. A magnetic field of intensity 8×10⁻²wb/m² is applied perpendicular to both the electric field and direction of motion of the electron. What is the velocity of the electron if it passes undeflected?

7.5×10⁵m/s

For undeflected, Electric force = Magnetic Force.

so, qE = qvB

s0, E = vB