3. In a particle accelerator, particles such as electrons are placed in an electric field between oppositely charged electric plates. The particle accelerates through the uniform electric field then passes through a gap (aperture) in the plate the particle is accelerating towards. a. Briefly explain why the electron, once it passes through the plate, is not pulled back into the gap. b. How can a particle accelerator for an electron be modified to accelerate a proton?

3. In a particle accelerator, particles such as electrons are placed in an electric field between oppositely charged electric plates. The particle accelerates through the uniform electric field then passes through a gap (aperture) in the plate the particle is accelerating towards. a. Briefly explain why the electron, once it passes through the plate, is not pulled back into the gap. b. How can a particle accelerator for an electron be modified to accelerate a proton?