An electron is placed in an electric field of strength $5 \times 10^4\,\text{V m}^{-1}$. No other force acts on the electron. The mass and charge of an electron are known. Which quantity can be worked out without any additional information?
- Athe force on the electron
- Bthe momentum of the electron
- Cthe kinetic energy of the electron
- Dthe speed of the electron