A simple and common technique for accelerating electrons is shown in the figure below, where a uniform electric field is created between two plates. Electrons are released, usually from a hot filament, near the negative plate, and there is a small hole in the positive plate that allows the electrons to continue moving. (a) Calculate the acceleration of the electron if the field strength is 9.32 x 104 N/C. m/s2 (b) Why will the electron not be pulled back to the positive plate once it moves through the hole? There Is no field outside the plates. The force of gravity is too strong. The other side of the positive plate also has a negative charge. Additional Materials