the electric gun in television tube is to acelerate electrons from rest to 3×10^7m/s with in adistance of 2cm. what is electric field is required?

Answer 1

Eq*distance=1/2 m v^2
E= 1/2 (m/q) v^2 /distance Look up the mass of an electron (in kg), and the charge q (in Coulombs), and compute E in newtons/coulomb. distance is .02m