- #1
Taulant Sholla
- 96
- 5
- Homework Statement
- An electron is shot directly toward the center of a large metal plate that has surface charge density sigma. If the initial kinetic energy of the electron is known and if the electron is to stop (due to electrostatic repulsion from the plate) just as it reaches the plate, how far from the plate must the launch point be?
- Relevant Equations
- E=sigma/a/epsilon_0
The solution to this problem states the electric field is E=σ/ε0. Is that because it's a conducting plate? I know for a non-conducting plate it's E=σ/2ε0. This is a Gauss' Law problem. I know how to derive for non-conducting plate. What's different with conducting plate derivation? Thank you!