A beam of electrons is accelerated through a potential difference of 10 kv before entering a velocity selector. if the b-field of the velocity selector is perpendicular to the velocity and has a value of 0.03 t, what value of the e-field is required (in the magnetic field region) if the particles are to be undeflected

Respuesta :

A) 2.3 x 103 V/m
B) 5.9 x 105 V/m
C) 6.0 x 105 V/m
D) 7.2 x 106 V/m